21142810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1579}}^1$

素因数の和:1702

約数の個数: 32

約数和(自身を含む): 41408640

約数和(自身を除く): 20265830

約数列:

[1, 2, 5, 10, 13, 26, 65, 103, 130, 206, 515, 1030, 1339, 1579, 2678, 3158, 6695, 7895, 13390, 15790, 20527, 41054, 102635, 162637, 205270, 325274, 813185, 1626370, 2114281, 4228562, 10571405, 21142810]

約数ペア:

[(1, 21142810), (2, 10571405), (5, 4228562), (10, 2114281), (13, 1626370), (26, 813185), (65, 325274), (103, 205270), (130, 162637), (206, 102635), (515, 41054), (1030, 20527), (1339, 15790), (1579, 13390), (2678, 7895), (3158, 6695)]