21315489

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{7487}}^1$

素因数の和:7576

約数の個数: 16

約数和(自身を含む): 31030272

約数和(自身を除く): 9714783

約数列:

[1, 3, 13, 39, 73, 219, 949, 2847, 7487, 22461, 97331, 291993, 546551, 1639653, 7105163, 21315489]

約数ペア:

[(1, 21315489), (3, 7105163), (13, 1639653), (39, 546551), (73, 291993), (219, 97331), (949, 22461), (2847, 7487)]