15811581

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 23528448

約数和(自身を除く): 7716867

約数列:

[1, 3, 17, 31, 51, 73, 93, 137, 219, 411, 527, 1241, 1581, 2263, 2329, 3723, 4247, 6789, 6987, 10001, 12741, 30003, 38471, 72199, 115413, 170017, 216597, 310031, 510051, 930093, 5270527, 15811581]

約数ペア:

[(1, 15811581), (3, 5270527), (17, 930093), (31, 510051), (51, 310031), (73, 216597), (93, 170017), (137, 115413), (219, 72199), (411, 38471), (527, 30003), (1241, 12741), (1581, 10001), (2263, 6987), (2329, 6789), (3723, 4247)]