20475940

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{6521}}^1$

素因数の和:6687

約数の個数: 24

約数和(自身を含む): 43279992

約数和(自身を除く): 22804052

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 6521, 13042, 26084, 32605, 65210, 130420, 1023797, 2047594, 4095188, 5118985, 10237970, 20475940]

約数ペア:

[(1, 20475940), (2, 10237970), (4, 5118985), (5, 4095188), (10, 2047594), (20, 1023797), (157, 130420), (314, 65210), (628, 32605), (785, 26084), (1570, 13042), (3140, 6521)]