278329025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{1987}}^1$

素因数の和:2441

約数の個数: 24

約数和(自身を含む): 372726144

約数和(自身を除く): 94397119

約数列:

[1, 5, 13, 25, 65, 325, 431, 1987, 2155, 5603, 9935, 10775, 25831, 28015, 49675, 129155, 140075, 645775, 856397, 4281985, 11133161, 21409925, 55665805, 278329025]

約数ペア:

[(1, 278329025), (5, 55665805), (13, 21409925), (25, 11133161), (65, 4281985), (325, 856397), (431, 645775), (1987, 140075), (2155, 129155), (5603, 49675), (9935, 28015), (10775, 25831)]