20021875

素因数分解:

$5^5\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:217

約数の個数: 24

約数和(自身を含む): 25779600

約数和(自身を除く): 5757725

約数列:

[1, 5, 25, 43, 125, 149, 215, 625, 745, 1075, 3125, 3725, 5375, 6407, 18625, 26875, 32035, 93125, 134375, 160175, 465625, 800875, 4004375, 20021875]

約数ペア:

[(1, 20021875), (5, 4004375), (25, 800875), (43, 465625), (125, 160175), (149, 134375), (215, 93125), (625, 32035), (745, 26875), (1075, 18625), (3125, 6407), (3725, 5375)]