19950625

素因数分解:

$5^4\times {\mathrm{137}}^1\times {\mathrm{233}}^1$

素因数の和:390

約数の個数: 20

約数和(自身を含む): 25220052

約数和(自身を除く): 5269427

約数列:

[1, 5, 25, 125, 137, 233, 625, 685, 1165, 3425, 5825, 17125, 29125, 31921, 85625, 145625, 159605, 798025, 3990125, 19950625]

約数ペア:

[(1, 19950625), (5, 3990125), (25, 798025), (125, 159605), (137, 145625), (233, 85625), (625, 31921), (685, 29125), (1165, 17125), (3425, 5825)]