21492500

素因数分解:

$2^2\times 5^4\times {\mathrm{8597}}^1$

素因数の和:8621

約数の個数: 30

約数和(自身を含む): 47005266

約数和(自身を除く): 25512766

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8597, 17194, 34388, 42985, 85970, 171940, 214925, 429850, 859700, 1074625, 2149250, 4298500, 5373125, 10746250, 21492500]

約数ペア:

[(1, 21492500), (2, 10746250), (4, 5373125), (5, 4298500), (10, 2149250), (20, 1074625), (25, 859700), (50, 429850), (100, 214925), (125, 171940), (250, 85970), (500, 42985), (625, 34388), (1250, 17194), (2500, 8597)]