12978020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{58991}}^1$

素因数の和:59011

約数の個数: 24

約数和(自身を含む): 29731968

約数和(自身を除く): 16753948

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 58991, 117982, 235964, 294955, 589910, 648901, 1179820, 1297802, 2595604, 3244505, 6489010, 12978020]

約数ペア:

[(1, 12978020), (2, 6489010), (4, 3244505), (5, 2595604), (10, 1297802), (11, 1179820), (20, 648901), (22, 589910), (44, 294955), (55, 235964), (110, 117982), (220, 58991)]