9972500

素因数分解:

$2^2\times 5^4\times {\mathrm{3989}}^1$

素因数の和:4013

約数の個数: 30

約数和(自身を含む): 21813330

約数和(自身を除く): 11840830

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 3989, 7978, 15956, 19945, 39890, 79780, 99725, 199450, 398900, 498625, 997250, 1994500, 2493125, 4986250, 9972500]

約数ペア:

[(1, 9972500), (2, 4986250), (4, 2493125), (5, 1994500), (10, 997250), (20, 498625), (25, 398900), (50, 199450), (100, 99725), (125, 79780), (250, 39890), (500, 19945), (625, 15956), (1250, 7978), (2500, 3989)]