20378631

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4391}}^1$

素因数の和:4431

約数の個数: 32

約数和(自身を含む): 35417088

約数和(自身を除く): 15038457

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4391, 4641, 13173, 30737, 57083, 74647, 92211, 171249, 223941, 399581, 522529, 970411, 1198743, 1567587, 2911233, 6792877, 20378631]

約数ペア:

[(1, 20378631), (3, 6792877), (7, 2911233), (13, 1567587), (17, 1198743), (21, 970411), (39, 522529), (51, 399581), (91, 223941), (119, 171249), (221, 92211), (273, 74647), (357, 57083), (663, 30737), (1547, 13173), (4391, 4641)]