7820780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1871}}^1$

素因数の和:1910

約数の個数: 48

約数和(自身を含む): 18869760

約数和(自身を除く): 11048980

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, 1871, 2090, 3742, 4180, 7484, 9355, 18710, 20581, 35549, 37420, 41162, 71098, 82324, 102905, 142196, 177745, 205810, 355490, 391039, 411620, 710980, 782078, 1564156, 1955195, 3910390, 7820780]

約数ペア:

[(1, 7820780), (2, 3910390), (4, 1955195), (5, 1564156), (10, 782078), (11, 710980), (19, 411620), (20, 391039), (22, 355490), (38, 205810), (44, 177745), (55, 142196), (76, 102905), (95, 82324), (110, 71098), (190, 41162), (209, 37420), (220, 35549), (380, 20581), (418, 18710), (836, 9355), (1045, 7484), (1871, 4180), (2090, 3742)]