81246250

素因数分解:

$2^1\times 5^4\times {\mathrm{64997}}^1$

素因数の和:65019

約数の個数: 20

約数和(自身を含む): 152290314

約数和(自身を除く): 71044064

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1250, 64997, 129994, 324985, 649970, 1624925, 3249850, 8124625, 16249250, 40623125, 81246250]

約数ペア:

[(1, 81246250), (2, 40623125), (5, 16249250), (10, 8124625), (25, 3249850), (50, 1624925), (125, 649970), (250, 324985), (625, 129994), (1250, 64997)]