20065940

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11273}}^1$

素因数の和:11371

約数の個数: 24

約数和(自身を含む): 42615720

約数和(自身を除く): 22549780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 11273, 22546, 45092, 56365, 112730, 225460, 1003297, 2006594, 4013188, 5016485, 10032970, 20065940]

約数ペア:

[(1, 20065940), (2, 10032970), (4, 5016485), (5, 4013188), (10, 2006594), (20, 1003297), (89, 225460), (178, 112730), (356, 56365), (445, 45092), (890, 22546), (1780, 11273)]