18475420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22531}}^1$

素因数の和:22581

約数の個数: 24

約数和(自身を含む): 39746448

約数和(自身を除く): 21271028

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22531, 45062, 90124, 112655, 225310, 450620, 923771, 1847542, 3695084, 4618855, 9237710, 18475420]

約数ペア:

[(1, 18475420), (2, 9237710), (4, 4618855), (5, 3695084), (10, 1847542), (20, 923771), (41, 450620), (82, 225310), (164, 112655), (205, 90124), (410, 45062), (820, 22531)]