18178820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4349}}^1$

素因数の和:4388

約数の個数: 48

約数和(自身を含む): 43848000

約数和(自身を除く): 25669180

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4349, 8698, 17396, 21745, 43490, 47839, 82631, 86980, 95678, 165262, 191356, 239195, 330524, 413155, 478390, 826310, 908941, 956780, 1652620, 1817882, 3635764, 4544705, 9089410, 18178820]

約数ペア:

[(1, 18178820), (2, 9089410), (4, 4544705), (5, 3635764), (10, 1817882), (11, 1652620), (19, 956780), (20, 908941), (22, 826310), (38, 478390), (44, 413155), (55, 330524), (76, 239195), (95, 191356), (110, 165262), (190, 95678), (209, 86980), (220, 82631), (380, 47839), (418, 43490), (836, 21745), (1045, 17396), (2090, 8698), (4180, 4349)]