161680180

素因数分解:

$2^2\times 5^1\times {\mathrm{691}}^1\times {\mathrm{11699}}^1$

素因数の和:12399

約数の個数: 24

約数和(自身を含む): 340048800

約数和(自身を除く): 178368620

約数列:

[1, 2, 4, 5, 10, 20, 691, 1382, 2764, 3455, 6910, 11699, 13820, 23398, 46796, 58495, 116990, 233980, 8084009, 16168018, 32336036, 40420045, 80840090, 161680180]

約数ペア:

[(1, 161680180), (2, 80840090), (4, 40420045), (5, 32336036), (10, 16168018), (20, 8084009), (691, 233980), (1382, 116990), (2764, 58495), (3455, 46796), (6910, 23398), (11699, 13820)]