20360780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4871}}^1$

素因数の和:4910

約数の個数: 48

約数和(自身を含む): 49109760

約数和(自身を除く): 28748980

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, 4871, 9742, 19484, 24355, 48710, 53581, 92549, 97420, 107162, 185098, 214324, 267905, 370196, 462745, 535810, 925490, 1018039, 1071620, 1850980, 2036078, 4072156, 5090195, 10180390, 20360780]

約数ペア:

[(1, 20360780), (2, 10180390), (4, 5090195), (5, 4072156), (10, 2036078), (11, 1850980), (19, 1071620), (20, 1018039), (22, 925490), (38, 535810), (44, 462745), (55, 370196), (76, 267905), (95, 214324), (110, 185098), (190, 107162), (209, 97420), (220, 92549), (380, 53581), (418, 48710), (836, 24355), (1045, 19484), (2090, 9742), (4180, 4871)]