20457100

素因数分解:

$2^2\times 5^2\times {\mathrm{157}}^1\times {\mathrm{1303}}^1$

素因数の和:1474

約数の個数: 36

約数和(自身を含む): 44708944

約数和(自身を除く): 24251844

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 157, 314, 628, 785, 1303, 1570, 2606, 3140, 3925, 5212, 6515, 7850, 13030, 15700, 26060, 32575, 65150, 130300, 204571, 409142, 818284, 1022855, 2045710, 4091420, 5114275, 10228550, 20457100]

約数ペア:

[(1, 20457100), (2, 10228550), (4, 5114275), (5, 4091420), (10, 2045710), (20, 1022855), (25, 818284), (50, 409142), (100, 204571), (157, 130300), (314, 65150), (628, 32575), (785, 26060), (1303, 15700), (1570, 13030), (2606, 7850), (3140, 6515), (3925, 5212)]