20942500

素因数分解:

$2^2\times 5^4\times {\mathrm{8377}}^1$

素因数の和:8401

約数の個数: 30

約数和(自身を含む): 45802526

約数和(自身を除く): 24860026

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8377, 16754, 33508, 41885, 83770, 167540, 209425, 418850, 837700, 1047125, 2094250, 4188500, 5235625, 10471250, 20942500]

約数ペア:

[(1, 20942500), (2, 10471250), (4, 5235625), (5, 4188500), (10, 2094250), (20, 1047125), (25, 837700), (50, 418850), (100, 209425), (125, 167540), (250, 83770), (500, 41885), (625, 33508), (1250, 16754), (2500, 8377)]