20202500

素因数分解:

$2^2\times 5^4\times {\mathrm{8081}}^1$

素因数の和:8105

約数の個数: 30

約数和(自身を含む): 44184294

約数和(自身を除く): 23981794

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8081, 16162, 32324, 40405, 80810, 161620, 202025, 404050, 808100, 1010125, 2020250, 4040500, 5050625, 10101250, 20202500]

約数ペア:

[(1, 20202500), (2, 10101250), (4, 5050625), (5, 4040500), (10, 2020250), (20, 1010125), (25, 808100), (50, 404050), (100, 202025), (125, 161620), (250, 80810), (500, 40405), (625, 32324), (1250, 16162), (2500, 8081)]