1981981870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{18018017}}^1$

素因数の和:18018035

約数の個数: 16

約数和(自身を含む): 3891891888

約数和(自身を除く): 1909910018

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 18018017, 36036034, 90090085, 180180170, 198198187, 396396374, 990990935, 1981981870]

約数ペア:

[(1, 1981981870), (2, 990990935), (5, 396396374), (10, 198198187), (11, 180180170), (22, 90090085), (55, 36036034), (110, 18018017)]