20412080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1033}}^1$

素因数の和:1078

約数の個数: 80

約数和(自身を含む): 53850720

約数和(自身を除く): 33438640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1033, 1040, 1235, 1520, 1976, 2066, 2470, 3952, 4132, 4940, 5165, 8264, 9880, 10330, 13429, 16528, 19627, 19760, 20660, 26858, 39254, 41320, 53716, 67145, 78508, 82640, 98135, 107432, 134290, 157016, 196270, 214864, 255151, 268580, 314032, 392540, 510302, 537160, 785080, 1020604, 1074320, 1275755, 1570160, 2041208, 2551510, 4082416, 5103020, 10206040, 20412080]

約数ペア:

[(1, 20412080), (2, 10206040), (4, 5103020), (5, 4082416), (8, 2551510), (10, 2041208), (13, 1570160), (16, 1275755), (19, 1074320), (20, 1020604), (26, 785080), (38, 537160), (40, 510302), (52, 392540), (65, 314032), (76, 268580), (80, 255151), (95, 214864), (104, 196270), (130, 157016), (152, 134290), (190, 107432), (208, 98135), (247, 82640), (260, 78508), (304, 67145), (380, 53716), (494, 41320), (520, 39254), (760, 26858), (988, 20660), (1033, 19760), (1040, 19627), (1235, 16528), (1520, 13429), (1976, 10330), (2066, 9880), (2470, 8264), (3952, 5165), (4132, 4940)]