20649700

素因数分解:

$2^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{5581}}^1$

素因数の和:5632

約数の個数: 36

約数和(自身を含む): 46029172

約数和(自身を除く): 25379472

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 148, 185, 370, 740, 925, 1850, 3700, 5581, 11162, 22324, 27905, 55810, 111620, 139525, 206497, 279050, 412994, 558100, 825988, 1032485, 2064970, 4129940, 5162425, 10324850, 20649700]

約数ペア:

[(1, 20649700), (2, 10324850), (4, 5162425), (5, 4129940), (10, 2064970), (20, 1032485), (25, 825988), (37, 558100), (50, 412994), (74, 279050), (100, 206497), (148, 139525), (185, 111620), (370, 55810), (740, 27905), (925, 22324), (1850, 11162), (3700, 5581)]