20510906

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1$

素因数の和:398

約数の個数: 32

約数和(自身を含む): 34546176

約数和(自身を除く): 14035270

約数列:

[1, 2, 13, 26, 41, 71, 82, 142, 271, 533, 542, 923, 1066, 1846, 2911, 3523, 5822, 7046, 11111, 19241, 22222, 37843, 38482, 75686, 144443, 250133, 288886, 500266, 788881, 1577762, 10255453, 20510906]

約数ペア:

[(1, 20510906), (2, 10255453), (13, 1577762), (26, 788881), (41, 500266), (71, 288886), (82, 250133), (142, 144443), (271, 75686), (533, 38482), (542, 37843), (923, 22222), (1066, 19241), (1846, 11111), (2911, 7046), (3523, 5822)]