21571108

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 20764892

約数列:

[1, 2, 4, 13, 26, 52, 59, 79, 89, 118, 158, 178, 236, 316, 356, 767, 1027, 1157, 1534, 2054, 2314, 3068, 4108, 4628, 4661, 5251, 7031, 9322, 10502, 14062, 18644, 21004, 28124, 60593, 68263, 91403, 121186, 136526, 182806, 242372, 273052, 365612, 414829, 829658, 1659316, 5392777, 10785554, 21571108]

約数ペア:

[(1, 21571108), (2, 10785554), (4, 5392777), (13, 1659316), (26, 829658), (52, 414829), (59, 365612), (79, 273052), (89, 242372), (118, 182806), (158, 136526), (178, 121186), (236, 91403), (316, 68263), (356, 60593), (767, 28124), (1027, 21004), (1157, 18644), (1534, 14062), (2054, 10502), (2314, 9322), (3068, 7031), (4108, 5251), (4628, 4661)]