15777620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 34546176

約数和(自身を除く): 18768556

約数列:

[1, 2, 4, 5, 10, 20, 41, 71, 82, 142, 164, 205, 271, 284, 355, 410, 542, 710, 820, 1084, 1355, 1420, 2710, 2911, 5420, 5822, 11111, 11644, 14555, 19241, 22222, 29110, 38482, 44444, 55555, 58220, 76964, 96205, 111110, 192410, 222220, 384820, 788881, 1577762, 3155524, 3944405, 7888810, 15777620]

約数ペア:

[(1, 15777620), (2, 7888810), (4, 3944405), (5, 3155524), (10, 1577762), (20, 788881), (41, 384820), (71, 222220), (82, 192410), (142, 111110), (164, 96205), (205, 76964), (271, 58220), (284, 55555), (355, 44444), (410, 38482), (542, 29110), (710, 22222), (820, 19241), (1084, 14555), (1355, 11644), (1420, 11111), (2710, 5822), (2911, 5420)]