20009288

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{457}}^1$

素因数の和:897

約数の個数: 32

約数和(自身を含む): 40587960

約数和(自身を除く): 20578672

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 421, 457, 842, 914, 1684, 1828, 3368, 3656, 5473, 5941, 10946, 11882, 21892, 23764, 43784, 47528, 192397, 384794, 769588, 1539176, 2501161, 5002322, 10004644, 20009288]

約数ペア:

[(1, 20009288), (2, 10004644), (4, 5002322), (8, 2501161), (13, 1539176), (26, 769588), (52, 384794), (104, 192397), (421, 47528), (457, 43784), (842, 23764), (914, 21892), (1684, 11882), (1828, 10946), (3368, 5941), (3656, 5473)]