21886480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:78

約数の個数: 240

約数和(自身を含む): 71245440

約数和(自身を除く): 49358960

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 17, 19, 20, 22, 28, 34, 35, 38, 40, 44, 55, 56, 68, 70, 76, 77, 80, 85, 88, 95, 110, 112, 119, 121, 133, 136, 140, 152, 154, 170, 176, 187, 190, 209, 220, 238, 242, 266, 272, 280, 304, 308, 323, 340, 374, 380, 385, 418, 440, 476, 484, 532, 560, 595, 605, 616, 646, 665, 680, 748, 760, 770, 836, 847, 880, 935, 952, 968, 1045, 1064, 1190, 1210, 1232, 1292, 1309, 1330, 1360, 1463, 1496, 1520, 1540, 1615, 1672, 1694, 1870, 1904, 1936, 2057, 2090, 2128, 2261, 2299, 2380, 2420, 2584, 2618, 2660, 2926, 2992, 3080, 3230, 3344, 3388, 3553, 3740, 4114, 4180, 4235, 4522, 4598, 4760, 4840, 5168, 5236, 5320, 5852, 6160, 6460, 6545, 6776, 7106, 7315, 7480, 8228, 8360, 8470, 9044, 9196, 9520, 9680, 10285, 10472, 10640, 11305, 11495, 11704, 12920, 13090, 13552, 14212, 14399, 14630, 14960, 16093, 16456, 16720, 16940, 17765, 18088, 18392, 20570, 20944, 22610, 22990, 23408, 24871, 25840, 26180, 28424, 28798, 29260, 32186, 32912, 33880, 35530, 36176, 36784, 39083, 41140, 45220, 45980, 49742, 52360, 56848, 57596, 58520, 64372, 67760, 71060, 71995, 78166, 80465, 82280, 90440, 91960, 99484, 104720, 115192, 117040, 124355, 128744, 142120, 143990, 156332, 160930, 164560, 180880, 183920, 195415, 198968, 230384, 248710, 257488, 273581, 284240, 287980, 312664, 321860, 390830, 397936, 497420, 547162, 575960, 625328, 643720, 781660, 994840, 1094324, 1151920, 1287440, 1367905, 1563320, 1989680, 2188648, 2735810, 3126640, 4377296, 5471620, 10943240, 21886480]

約数ペア:

[(1, 21886480), (2, 10943240), (4, 5471620), (5, 4377296), (7, 3126640), (8, 2735810), (10, 2188648), (11, 1989680), (14, 1563320), (16, 1367905), (17, 1287440), (19, 1151920), (20, 1094324), (22, 994840), (28, 781660), (34, 643720), (35, 625328), (38, 575960), (40, 547162), (44, 497420), (55, 397936), (56, 390830), (68, 321860), (70, 312664), (76, 287980), (77, 284240), (80, 273581), (85, 257488), (88, 248710), (95, 230384), (110, 198968), (112, 195415), (119, 183920), (121, 180880), (133, 164560), (136, 160930), (140, 156332), (152, 143990), (154, 142120), (170, 128744), (176, 124355), (187, 117040), (190, 115192), (209, 104720), (220, 99484), (238, 91960), (242, 90440), (266, 82280), (272, 80465), (280, 78166), (304, 71995), (308, 71060), (323, 67760), (340, 64372), (374, 58520), (380, 57596), (385, 56848), (418, 52360), (440, 49742), (476, 45980), (484, 45220), (532, 41140), (560, 39083), (595, 36784), (605, 36176), (616, 35530), (646, 33880), (665, 32912), (680, 32186), (748, 29260), (760, 28798), (770, 28424), (836, 26180), (847, 25840), (880, 24871), (935, 23408), (952, 22990), (968, 22610), (1045, 20944), (1064, 20570), (1190, 18392), (1210, 18088), (1232, 17765), (1292, 16940), (1309, 16720), (1330, 16456), (1360, 16093), (1463, 14960), (1496, 14630), (1520, 14399), (1540, 14212), (1615, 13552), (1672, 13090), (1694, 12920), (1870, 11704), (1904, 11495), (1936, 11305), (2057, 10640), (2090, 10472), (2128, 10285), (2261, 9680), (2299, 9520), (2380, 9196), (2420, 9044), (2584, 8470), (2618, 8360), (2660, 8228), (2926, 7480), (2992, 7315), (3080, 7106), (3230, 6776), (3344, 6545), (3388, 6460), (3553, 6160), (3740, 5852), (4114, 5320), (4180, 5236), (4235, 5168), (4522, 4840), (4598, 4760)]