21684260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83401}}^1$

素因数の和:83423

約数の個数: 24

約数和(自身を含む): 49040376

約数和(自身を除く): 27356116

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83401, 166802, 333604, 417005, 834010, 1084213, 1668020, 2168426, 4336852, 5421065, 10842130, 21684260]

約数ペア:

[(1, 21684260), (2, 10842130), (4, 5421065), (5, 4336852), (10, 2168426), (13, 1668020), (20, 1084213), (26, 834010), (52, 417005), (65, 333604), (130, 166802), (260, 83401)]