665660

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{401}}^1$

素因数の和:493

約数の個数: 24

約数和(自身を含む): 1418256

約数和(自身を除く): 752596

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 401, 415, 802, 830, 1604, 1660, 2005, 4010, 8020, 33283, 66566, 133132, 166415, 332830, 665660]

約数ペア:

[(1, 665660), (2, 332830), (4, 166415), (5, 133132), (10, 66566), (20, 33283), (83, 8020), (166, 4010), (332, 2005), (401, 1660), (415, 1604), (802, 830)]