1971901568

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:235

約数の個数: 256

約数和(自身を含む): 5147197440

約数和(自身を除く): 3175295872

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 31, 32, 43, 52, 56, 62, 64, 86, 91, 104, 112, 124, 127, 128, 172, 182, 208, 217, 224, 248, 254, 301, 344, 364, 403, 416, 434, 448, 496, 508, 559, 602, 688, 728, 806, 832, 868, 889, 896, 992, 1016, 1118, 1204, 1333, 1376, 1456, 1612, 1651, 1664, 1736, 1778, 1984, 2032, 2236, 2408, 2666, 2752, 2821, 2912, 3224, 3302, 3472, 3556, 3913, 3937, 3968, 4064, 4472, 4816, 5332, 5461, 5504, 5642, 5824, 6448, 6604, 6944, 7112, 7826, 7874, 8128, 8944, 9331, 9632, 10664, 10922, 11284, 11557, 11648, 12896, 13208, 13888, 14224, 15652, 15748, 16256, 17329, 17888, 18662, 19264, 21328, 21844, 22568, 23114, 25792, 26416, 27559, 27776, 28448, 31304, 31496, 34658, 35776, 37324, 38227, 38528, 42656, 43688, 45136, 46228, 51181, 51584, 52832, 55118, 56896, 62608, 62992, 69316, 70993, 71552, 74648, 76454, 85312, 87376, 90272, 92456, 102362, 105664, 110236, 113792, 121303, 125216, 125984, 138632, 141986, 149296, 152908, 169291, 170624, 174752, 180544, 184912, 204724, 211328, 220472, 242606, 250432, 251968, 277264, 283972, 298592, 305816, 338582, 349504, 358267, 361088, 369824, 409448, 440944, 485212, 496951, 500864, 503936, 554528, 567944, 597184, 611632, 677164, 699008, 716534, 739648, 818896, 881888, 970424, 993902, 1109056, 1135888, 1185037, 1194368, 1223264, 1354328, 1433068, 1479296, 1637792, 1763776, 1940848, 1987804, 2200783, 2218112, 2271776, 2370074, 2446528, 2708656, 2866136, 3275584, 3527552, 3881696, 3975608, 4401566, 4543552, 4740148, 4893056, 5417312, 5732272, 6551168, 7763392, 7951216, 8803132, 9087104, 9480296, 10834624, 11464544, 15405481, 15526784, 15902432, 17606264, 18960592, 21669248, 22929088, 30810962, 31804864, 35212528, 37921184, 45858176, 61621924, 63609728, 70425056, 75842368, 123243848, 140850112, 151684736, 246487696, 281700224, 492975392, 985950784, 1971901568]

約数ペア:

[(1, 1971901568), (2, 985950784), (4, 492975392), (7, 281700224), (8, 246487696), (13, 151684736), (14, 140850112), (16, 123243848), (26, 75842368), (28, 70425056), (31, 63609728), (32, 61621924), (43, 45858176), (52, 37921184), (56, 35212528), (62, 31804864), (64, 30810962), (86, 22929088), (91, 21669248), (104, 18960592), (112, 17606264), (124, 15902432), (127, 15526784), (128, 15405481), (172, 11464544), (182, 10834624), (208, 9480296), (217, 9087104), (224, 8803132), (248, 7951216), (254, 7763392), (301, 6551168), (344, 5732272), (364, 5417312), (403, 4893056), (416, 4740148), (434, 4543552), (448, 4401566), (496, 3975608), (508, 3881696), (559, 3527552), (602, 3275584), (688, 2866136), (728, 2708656), (806, 2446528), (832, 2370074), (868, 2271776), (889, 2218112), (896, 2200783), (992, 1987804), (1016, 1940848), (1118, 1763776), (1204, 1637792), (1333, 1479296), (1376, 1433068), (1456, 1354328), (1612, 1223264), (1651, 1194368), (1664, 1185037), (1736, 1135888), (1778, 1109056), (1984, 993902), (2032, 970424), (2236, 881888), (2408, 818896), (2666, 739648), (2752, 716534), (2821, 699008), (2912, 677164), (3224, 611632), (3302, 597184), (3472, 567944), (3556, 554528), (3913, 503936), (3937, 500864), (3968, 496951), (4064, 485212), (4472, 440944), (4816, 409448), (5332, 369824), (5461, 361088), (5504, 358267), (5642, 349504), (5824, 338582), (6448, 305816), (6604, 298592), (6944, 283972), (7112, 277264), (7826, 251968), (7874, 250432), (8128, 242606), (8944, 220472), (9331, 211328), (9632, 204724), (10664, 184912), (10922, 180544), (11284, 174752), (11557, 170624), (11648, 169291), (12896, 152908), (13208, 149296), (13888, 141986), (14224, 138632), (15652, 125984), (15748, 125216), (16256, 121303), (17329, 113792), (17888, 110236), (18662, 105664), (19264, 102362), (21328, 92456), (21844, 90272), (22568, 87376), (23114, 85312), (25792, 76454), (26416, 74648), (27559, 71552), (27776, 70993), (28448, 69316), (31304, 62992), (31496, 62608), (34658, 56896), (35776, 55118), (37324, 52832), (38227, 51584), (38528, 51181), (42656, 46228), (43688, 45136)]