21981323

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{1093}}^1$

素因数の和:1143

約数の個数: 24

約数和(自身を含む): 28829088

約数和(自身を除く): 6847765

約数列:

[1, 7, 13, 17, 91, 119, 169, 221, 1093, 1183, 1547, 2873, 7651, 14209, 18581, 20111, 99463, 130067, 184717, 241553, 1293019, 1690871, 3140189, 21981323]

約数ペア:

[(1, 21981323), (7, 3140189), (13, 1690871), (17, 1293019), (91, 241553), (119, 184717), (169, 130067), (221, 99463), (1093, 20111), (1183, 18581), (1547, 14209), (2873, 7651)]