21017140

素因数分解:

$2^2\times 5^1\times {\mathrm{521}}^1\times {\mathrm{2017}}^1$

素因数の和:2547

約数の個数: 24

約数和(自身を含む): 44242632

約数和(自身を除く): 23225492

約数列:

[1, 2, 4, 5, 10, 20, 521, 1042, 2017, 2084, 2605, 4034, 5210, 8068, 10085, 10420, 20170, 40340, 1050857, 2101714, 4203428, 5254285, 10508570, 21017140]

約数ペア:

[(1, 21017140), (2, 10508570), (4, 5254285), (5, 4203428), (10, 2101714), (20, 1050857), (521, 40340), (1042, 20170), (2017, 10420), (2084, 10085), (2605, 8068), (4034, 5210)]