21449518

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{13127}}^1$

素因数の和:13191

約数の個数: 16

約数和(自身を含む): 34657920

約数和(自身を除く): 13208402

約数列:

[1, 2, 19, 38, 43, 86, 817, 1634, 13127, 26254, 249413, 498826, 564461, 1128922, 10724759, 21449518]

約数ペア:

[(1, 21449518), (2, 10724759), (19, 1128922), (38, 564461), (43, 498826), (86, 249413), (817, 26254), (1634, 13127)]