18977222

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{179}}^1$

素因数の和:332

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 13163578

約数列:

[1, 2, 11, 22, 61, 79, 122, 158, 179, 358, 671, 869, 1342, 1738, 1969, 3938, 4819, 9638, 10919, 14141, 21838, 28282, 53009, 106018, 120109, 155551, 240218, 311102, 862601, 1725202, 9488611, 18977222]

約数ペア:

[(1, 18977222), (2, 9488611), (11, 1725202), (22, 862601), (61, 311102), (79, 240218), (122, 155551), (158, 120109), (179, 106018), (358, 53009), (671, 28282), (869, 21838), (1342, 14141), (1738, 10919), (1969, 9638), (3938, 4819)]