21783749

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{409}}^1$

素因数の和:680

約数の個数: 16

約数和(自身を含む): 25003440

約数和(自身を除く): 3219691

約数列:

[1, 13, 17, 221, 241, 409, 3133, 4097, 5317, 6953, 53261, 90389, 98569, 1281397, 1675673, 21783749]

約数ペア:

[(1, 21783749), (13, 1675673), (17, 1281397), (221, 98569), (241, 90389), (409, 53261), (3133, 6953), (4097, 5317)]