28839720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:192

約数の個数: 256

約数和(自身を含む): 112896000

約数和(自身を除く): 84056280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 19, 20, 21, 24, 26, 28, 30, 35, 38, 39, 40, 42, 52, 56, 57, 60, 65, 70, 76, 78, 84, 91, 95, 104, 105, 114, 120, 130, 133, 139, 140, 152, 156, 168, 182, 190, 195, 210, 228, 247, 260, 266, 273, 278, 280, 285, 312, 364, 380, 390, 399, 417, 420, 455, 456, 494, 520, 532, 546, 556, 570, 665, 695, 728, 741, 760, 780, 798, 834, 840, 910, 973, 988, 1064, 1092, 1112, 1140, 1235, 1330, 1365, 1390, 1482, 1560, 1596, 1668, 1729, 1807, 1820, 1946, 1976, 1995, 2085, 2184, 2280, 2470, 2641, 2660, 2730, 2780, 2919, 2964, 3192, 3336, 3458, 3614, 3640, 3705, 3892, 3990, 4170, 4865, 4940, 5187, 5282, 5320, 5421, 5460, 5560, 5838, 5928, 6916, 7228, 7410, 7784, 7923, 7980, 8340, 8645, 9035, 9730, 9880, 10374, 10564, 10842, 10920, 11676, 12649, 13205, 13832, 14456, 14595, 14820, 15846, 15960, 16680, 17290, 18070, 18487, 19460, 20748, 21128, 21684, 23352, 25298, 25935, 26410, 27105, 29190, 29640, 31692, 34333, 34580, 36140, 36974, 37947, 38920, 39615, 41496, 43368, 50596, 51870, 52820, 54210, 55461, 58380, 63245, 63384, 68666, 69160, 72280, 73948, 75894, 79230, 92435, 101192, 102999, 103740, 105640, 108420, 110922, 116760, 126490, 137332, 147896, 151788, 158460, 171665, 184870, 189735, 205998, 207480, 216840, 221844, 240331, 252980, 274664, 277305, 303576, 316920, 343330, 369740, 379470, 411996, 443688, 480662, 505960, 514995, 554610, 686660, 720993, 739480, 758940, 823992, 961324, 1029990, 1109220, 1201655, 1373320, 1441986, 1517880, 1922648, 2059980, 2218440, 2403310, 2883972, 3604965, 4119960, 4806620, 5767944, 7209930, 9613240, 14419860, 28839720]

約数ペア:

[(1, 28839720), (2, 14419860), (3, 9613240), (4, 7209930), (5, 5767944), (6, 4806620), (7, 4119960), (8, 3604965), (10, 2883972), (12, 2403310), (13, 2218440), (14, 2059980), (15, 1922648), (19, 1517880), (20, 1441986), (21, 1373320), (24, 1201655), (26, 1109220), (28, 1029990), (30, 961324), (35, 823992), (38, 758940), (39, 739480), (40, 720993), (42, 686660), (52, 554610), (56, 514995), (57, 505960), (60, 480662), (65, 443688), (70, 411996), (76, 379470), (78, 369740), (84, 343330), (91, 316920), (95, 303576), (104, 277305), (105, 274664), (114, 252980), (120, 240331), (130, 221844), (133, 216840), (139, 207480), (140, 205998), (152, 189735), (156, 184870), (168, 171665), (182, 158460), (190, 151788), (195, 147896), (210, 137332), (228, 126490), (247, 116760), (260, 110922), (266, 108420), (273, 105640), (278, 103740), (280, 102999), (285, 101192), (312, 92435), (364, 79230), (380, 75894), (390, 73948), (399, 72280), (417, 69160), (420, 68666), (455, 63384), (456, 63245), (494, 58380), (520, 55461), (532, 54210), (546, 52820), (556, 51870), (570, 50596), (665, 43368), (695, 41496), (728, 39615), (741, 38920), (760, 37947), (780, 36974), (798, 36140), (834, 34580), (840, 34333), (910, 31692), (973, 29640), (988, 29190), (1064, 27105), (1092, 26410), (1112, 25935), (1140, 25298), (1235, 23352), (1330, 21684), (1365, 21128), (1390, 20748), (1482, 19460), (1560, 18487), (1596, 18070), (1668, 17290), (1729, 16680), (1807, 15960), (1820, 15846), (1946, 14820), (1976, 14595), (1995, 14456), (2085, 13832), (2184, 13205), (2280, 12649), (2470, 11676), (2641, 10920), (2660, 10842), (2730, 10564), (2780, 10374), (2919, 9880), (2964, 9730), (3192, 9035), (3336, 8645), (3458, 8340), (3614, 7980), (3640, 7923), (3705, 7784), (3892, 7410), (3990, 7228), (4170, 6916), (4865, 5928), (4940, 5838), (5187, 5560), (5282, 5460), (5320, 5421)]