21177140

素因数分解:

$2^2\times 5^1\times {\mathrm{557}}^1\times {\mathrm{1901}}^1$

素因数の和:2467

約数の個数: 24

約数和(自身を含む): 44575272

約数和(自身を除く): 23398132

約数列:

[1, 2, 4, 5, 10, 20, 557, 1114, 1901, 2228, 2785, 3802, 5570, 7604, 9505, 11140, 19010, 38020, 1058857, 2117714, 4235428, 5294285, 10588570, 21177140]

約数ペア:

[(1, 21177140), (2, 10588570), (4, 5294285), (5, 4235428), (10, 2117714), (20, 1058857), (557, 38020), (1114, 19010), (1901, 11140), (2228, 9505), (2785, 7604), (3802, 5570)]