20589920

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1$

素因数の和:568

約数の個数: 96

約数和(自身を含む): 55248480

約数和(自身を除く): 34658560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 160, 190, 208, 247, 260, 304, 380, 416, 494, 520, 521, 608, 760, 988, 1040, 1042, 1235, 1520, 1976, 2080, 2084, 2470, 2605, 3040, 3952, 4168, 4940, 5210, 6773, 7904, 8336, 9880, 9899, 10420, 13546, 16672, 19760, 19798, 20840, 27092, 33865, 39520, 39596, 41680, 49495, 54184, 67730, 79192, 83360, 98990, 108368, 128687, 135460, 158384, 197980, 216736, 257374, 270920, 316768, 395960, 514748, 541840, 643435, 791920, 1029496, 1083680, 1286870, 1583840, 2058992, 2573740, 4117984, 5147480, 10294960, 20589920]

約数ペア:

[(1, 20589920), (2, 10294960), (4, 5147480), (5, 4117984), (8, 2573740), (10, 2058992), (13, 1583840), (16, 1286870), (19, 1083680), (20, 1029496), (26, 791920), (32, 643435), (38, 541840), (40, 514748), (52, 395960), (65, 316768), (76, 270920), (80, 257374), (95, 216736), (104, 197980), (130, 158384), (152, 135460), (160, 128687), (190, 108368), (208, 98990), (247, 83360), (260, 79192), (304, 67730), (380, 54184), (416, 49495), (494, 41680), (520, 39596), (521, 39520), (608, 33865), (760, 27092), (988, 20840), (1040, 19798), (1042, 19760), (1235, 16672), (1520, 13546), (1976, 10420), (2080, 9899), (2084, 9880), (2470, 8336), (2605, 7904), (3040, 6773), (3952, 5210), (4168, 4940)]