215156020

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{34591}}^1$

素因数の和:34911

約数の個数: 24

約数和(自身を含む): 453293568

約数和(自身を除く): 238137548

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 3110, 6220, 34591, 69182, 138364, 172955, 345910, 691820, 10757801, 21515602, 43031204, 53789005, 107578010, 215156020]

約数ペア:

[(1, 215156020), (2, 107578010), (4, 53789005), (5, 43031204), (10, 21515602), (20, 10757801), (311, 691820), (622, 345910), (1244, 172955), (1555, 138364), (3110, 69182), (6220, 34591)]