7220421

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{6857}}^1$

素因数の和:6882

約数の個数: 20

約数和(自身を含む): 11617452

約数和(自身を除く): 4397031

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 6857, 20571, 61713, 89141, 185139, 267423, 555417, 802269, 2406807, 7220421]

約数ペア:

[(1, 7220421), (3, 2406807), (9, 802269), (13, 555417), (27, 267423), (39, 185139), (81, 89141), (117, 61713), (351, 20571), (1053, 6857)]