20178495

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7351}}^1$

素因数の和:7423

約数の個数: 24

約数和(自身を含む): 35554272

約数和(自身を除く): 15375777

約数列:

[1, 3, 5, 9, 15, 45, 61, 183, 305, 549, 915, 2745, 7351, 22053, 36755, 66159, 110265, 330795, 448411, 1345233, 2242055, 4035699, 6726165, 20178495]

約数ペア:

[(1, 20178495), (3, 6726165), (5, 4035699), (9, 2242055), (15, 1345233), (45, 448411), (61, 330795), (183, 110265), (305, 66159), (549, 36755), (915, 22053), (2745, 7351)]