25547980

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{1289}}^1$

素因数の和:2289

約数の個数: 24

約数和(自身を含む): 53746560

約数和(自身を除く): 28198580

約数列:

[1, 2, 4, 5, 10, 20, 991, 1289, 1982, 2578, 3964, 4955, 5156, 6445, 9910, 12890, 19820, 25780, 1277399, 2554798, 5109596, 6386995, 12773990, 25547980]

約数ペア:

[(1, 25547980), (2, 12773990), (4, 6386995), (5, 5109596), (10, 2554798), (20, 1277399), (991, 25780), (1289, 19820), (1982, 12890), (2578, 9910), (3964, 6445), (4955, 5156)]