128587257

素因数分解:

$3^4\times {\mathrm{307}}^1\times {\mathrm{5171}}^1$

素因数の和:5490

約数の個数: 20

約数和(自身を含む): 192750096

約数和(自身を除く): 64162839

約数列:

[1, 3, 9, 27, 81, 307, 921, 2763, 5171, 8289, 15513, 24867, 46539, 139617, 418851, 1587497, 4762491, 14287473, 42862419, 128587257]

約数ペア:

[(1, 128587257), (3, 42862419), (9, 14287473), (27, 4762491), (81, 1587497), (307, 418851), (921, 139617), (2763, 46539), (5171, 24867), (8289, 15513)]