64660880

素因数分解:

$2^4\times 5^1\times {\mathrm{808261}}^1$

素因数の和:808274

約数の個数: 20

約数和(自身を含む): 150336732

約数和(自身を除く): 85675852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 808261, 1616522, 3233044, 4041305, 6466088, 8082610, 12932176, 16165220, 32330440, 64660880]

約数ペア:

[(1, 64660880), (2, 32330440), (4, 16165220), (5, 12932176), (8, 8082610), (10, 6466088), (16, 4041305), (20, 3233044), (40, 1616522), (80, 808261)]