20277998

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1$

素因数の和:356

約数の個数: 32

約数和(自身を含む): 34128864

約数和(自身を除く): 13850866

約数列:

[1, 2, 13, 26, 37, 74, 107, 197, 214, 394, 481, 962, 1391, 2561, 2782, 3959, 5122, 7289, 7918, 14578, 21079, 42158, 51467, 94757, 102934, 189514, 274027, 548054, 779923, 1559846, 10138999, 20277998]

約数ペア:

[(1, 20277998), (2, 10138999), (13, 1559846), (26, 779923), (37, 548054), (74, 274027), (107, 189514), (197, 102934), (214, 94757), (394, 51467), (481, 42158), (962, 21079), (1391, 14578), (2561, 7918), (2782, 7289), (3959, 5122)]