20425700

素因数分解:

$2^2\times 5^2\times {\mathrm{157}}^1\times {\mathrm{1301}}^1$

素因数の和:1472

約数の個数: 36

約数和(自身を含む): 44640372

約数和(自身を除く): 24214672

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 157, 314, 628, 785, 1301, 1570, 2602, 3140, 3925, 5204, 6505, 7850, 13010, 15700, 26020, 32525, 65050, 130100, 204257, 408514, 817028, 1021285, 2042570, 4085140, 5106425, 10212850, 20425700]

約数ペア:

[(1, 20425700), (2, 10212850), (4, 5106425), (5, 4085140), (10, 2042570), (20, 1021285), (25, 817028), (50, 408514), (100, 204257), (157, 130100), (314, 65050), (628, 32525), (785, 26020), (1301, 15700), (1570, 13010), (2602, 7850), (3140, 6505), (3925, 5204)]