21620651

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{271}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 26115264

約数和(自身を除く): 4494613

約数列:

[1, 13, 17, 19, 221, 247, 271, 323, 361, 3523, 4199, 4607, 4693, 5149, 6137, 59891, 66937, 79781, 87533, 97831, 1137929, 1271803, 1663127, 21620651]

約数ペア:

[(1, 21620651), (13, 1663127), (17, 1271803), (19, 1137929), (221, 97831), (247, 87533), (271, 79781), (323, 66937), (361, 59891), (3523, 6137), (4199, 5149), (4607, 4693)]