18402700

素因数分解:

$2^2\times 5^2\times {\mathrm{163}}^1\times {\mathrm{1129}}^1$

素因数の和:1306

約数の個数: 36

約数和(自身を含む): 40214440

約数和(自身を除く): 21811740

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 163, 326, 652, 815, 1129, 1630, 2258, 3260, 4075, 4516, 5645, 8150, 11290, 16300, 22580, 28225, 56450, 112900, 184027, 368054, 736108, 920135, 1840270, 3680540, 4600675, 9201350, 18402700]

約数ペア:

[(1, 18402700), (2, 9201350), (4, 4600675), (5, 3680540), (10, 1840270), (20, 920135), (25, 736108), (50, 368054), (100, 184027), (163, 112900), (326, 56450), (652, 28225), (815, 22580), (1129, 16300), (1630, 11290), (2258, 8150), (3260, 5645), (4075, 4516)]