21487212

素因数分解:

$2^2\times 3^2\times {\mathrm{727}}^1\times {\mathrm{821}}^1$

素因数の和:1558

約数の個数: 36

約数和(自身を含む): 54455856

約数和(自身を除く): 32968644

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 727, 821, 1454, 1642, 2181, 2463, 2908, 3284, 4362, 4926, 6543, 7389, 8724, 9852, 13086, 14778, 26172, 29556, 596867, 1193734, 1790601, 2387468, 3581202, 5371803, 7162404, 10743606, 21487212]

約数ペア:

[(1, 21487212), (2, 10743606), (3, 7162404), (4, 5371803), (6, 3581202), (9, 2387468), (12, 1790601), (18, 1193734), (36, 596867), (727, 29556), (821, 26172), (1454, 14778), (1642, 13086), (2181, 9852), (2463, 8724), (2908, 7389), (3284, 6543), (4362, 4926)]