1561250

素因数分解:

$2^1\times 5^4\times {\mathrm{1249}}^1$

素因数の和:1271

約数の個数: 20

約数和(自身を含む): 2928750

約数和(自身を除く): 1367500

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1249, 1250, 2498, 6245, 12490, 31225, 62450, 156125, 312250, 780625, 1561250]

約数ペア:

[(1, 1561250), (2, 780625), (5, 312250), (10, 156125), (25, 62450), (50, 31225), (125, 12490), (250, 6245), (625, 2498), (1249, 1250)]