81257920

素因数分解:

$2^6\times 5^1\times {\mathrm{37}}^1\times {\mathrm{6863}}^1$

素因数の和:6917

約数の個数: 56

約数和(自身を含む): 198753984

約数和(自身を除く): 117496064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 148, 160, 185, 296, 320, 370, 592, 740, 1184, 1480, 2368, 2960, 5920, 6863, 11840, 13726, 27452, 34315, 54904, 68630, 109808, 137260, 219616, 253931, 274520, 439232, 507862, 549040, 1015724, 1098080, 1269655, 2031448, 2196160, 2539310, 4062896, 5078620, 8125792, 10157240, 16251584, 20314480, 40628960, 81257920]

約数ペア:

[(1, 81257920), (2, 40628960), (4, 20314480), (5, 16251584), (8, 10157240), (10, 8125792), (16, 5078620), (20, 4062896), (32, 2539310), (37, 2196160), (40, 2031448), (64, 1269655), (74, 1098080), (80, 1015724), (148, 549040), (160, 507862), (185, 439232), (296, 274520), (320, 253931), (370, 219616), (592, 137260), (740, 109808), (1184, 68630), (1480, 54904), (2368, 34315), (2960, 27452), (5920, 13726), (6863, 11840)]