17920540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{81457}}^1$

素因数の和:81477

約数の個数: 24

約数和(自身を含む): 41054832

約数和(自身を除く): 23134292

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 81457, 162914, 325828, 407285, 814570, 896027, 1629140, 1792054, 3584108, 4480135, 8960270, 17920540]

約数ペア:

[(1, 17920540), (2, 8960270), (4, 4480135), (5, 3584108), (10, 1792054), (11, 1629140), (20, 896027), (22, 814570), (44, 407285), (55, 325828), (110, 162914), (220, 81457)]