21286250

素因数分解:

$2^1\times 5^4\times {\mathrm{17029}}^1$

素因数の和:17051

約数の個数: 20

約数和(自身を含む): 39901290

約数和(自身を除く): 18615040

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1250, 17029, 34058, 85145, 170290, 425725, 851450, 2128625, 4257250, 10643125, 21286250]

約数ペア:

[(1, 21286250), (2, 10643125), (5, 4257250), (10, 2128625), (25, 851450), (50, 425725), (125, 170290), (250, 85145), (625, 34058), (1250, 17029)]