27720625

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{2609}}^1$

素因数の和:2646

約数の個数: 20

約数和(自身を含む): 36691380

約数和(自身を除く): 8970755

約数列:

[1, 5, 17, 25, 85, 125, 425, 625, 2125, 2609, 10625, 13045, 44353, 65225, 221765, 326125, 1108825, 1630625, 5544125, 27720625]

約数ペア:

[(1, 27720625), (5, 5544125), (17, 1630625), (25, 1108825), (85, 326125), (125, 221765), (425, 65225), (625, 44353), (2125, 13045), (2609, 10625)]