20615775

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{8867}}^1$

素因数の和:8911

約数の個数: 24

約数和(自身を含む): 35188224

約数和(自身を除く): 14572449

約数列:

[1, 3, 5, 15, 25, 31, 75, 93, 155, 465, 775, 2325, 8867, 26601, 44335, 133005, 221675, 274877, 665025, 824631, 1374385, 4123155, 6871925, 20615775]

約数ペア:

[(1, 20615775), (3, 6871925), (5, 4123155), (15, 1374385), (25, 824631), (31, 665025), (75, 274877), (93, 221675), (155, 133005), (465, 44335), (775, 26601), (2325, 8867)]