18816637

素因数分解:

$7^4\times {\mathrm{17}}^1\times {\mathrm{461}}^1$

素因数の和:506

約数の個数: 20

約数和(自身を含む): 23293116

約数和(自身を除く): 4476479

約数列:

[1, 7, 17, 49, 119, 343, 461, 833, 2401, 3227, 5831, 7837, 22589, 40817, 54859, 158123, 384013, 1106861, 2688091, 18816637]

約数ペア:

[(1, 18816637), (7, 2688091), (17, 1106861), (49, 384013), (119, 158123), (343, 54859), (461, 40817), (833, 22589), (2401, 7837), (3227, 5831)]