25640372

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{659}}^1$

素因数の和:871

約数の個数: 24

約数和(自身を含む): 45904320

約数和(自身を除く): 20263948

約数列:

[1, 2, 4, 71, 137, 142, 274, 284, 548, 659, 1318, 2636, 9727, 19454, 38908, 46789, 90283, 93578, 180566, 187156, 361132, 6410093, 12820186, 25640372]

約数ペア:

[(1, 25640372), (2, 12820186), (4, 6410093), (71, 361132), (137, 187156), (142, 180566), (274, 93578), (284, 90283), (548, 46789), (659, 38908), (1318, 19454), (2636, 9727)]