18992571

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^3\times {\mathrm{71}}^1$

素因数の和:144

約数の個数: 32

約数和(自身を含む): 29191680

約数和(自身を除く): 10199109

約数列:

[1, 3, 13, 19, 39, 57, 71, 213, 247, 361, 741, 923, 1083, 1349, 2769, 4047, 4693, 6859, 14079, 17537, 20577, 25631, 52611, 76893, 89167, 267501, 333203, 486989, 999609, 1460967, 6330857, 18992571]

約数ペア:

[(1, 18992571), (3, 6330857), (13, 1460967), (19, 999609), (39, 486989), (57, 333203), (71, 267501), (213, 89167), (247, 76893), (361, 52611), (741, 25631), (923, 20577), (1083, 17537), (1349, 14079), (2769, 6859), (4047, 4693)]