20042500

素因数分解:

$2^2\times 5^4\times {\mathrm{8017}}^1$

素因数の和:8041

約数の個数: 30

約数和(自身を含む): 43834406

約数和(自身を除く): 23791906

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8017, 16034, 32068, 40085, 80170, 160340, 200425, 400850, 801700, 1002125, 2004250, 4008500, 5010625, 10021250, 20042500]

約数ペア:

[(1, 20042500), (2, 10021250), (4, 5010625), (5, 4008500), (10, 2004250), (20, 1002125), (25, 801700), (50, 400850), (100, 200425), (125, 160340), (250, 80170), (500, 40085), (625, 32068), (1250, 16034), (2500, 8017)]