19278820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{87631}}^1$

素因数の和:87651

約数の個数: 24

約数和(自身を含む): 44166528

約数和(自身を除く): 24887708

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 87631, 175262, 350524, 438155, 876310, 963941, 1752620, 1927882, 3855764, 4819705, 9639410, 19278820]

約数ペア:

[(1, 19278820), (2, 9639410), (4, 4819705), (5, 3855764), (10, 1927882), (11, 1752620), (20, 963941), (22, 876310), (44, 438155), (55, 350524), (110, 175262), (220, 87631)]