21686910765

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1997}}^1\times {\mathrm{55691}}^1$

素因数の和:57709

約数の個数: 32

約数和(自身を含む): 37387598976

約数和(自身を除く): 15700688211

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 1997, 5991, 9985, 25961, 29955, 55691, 77883, 129805, 167073, 278455, 389415, 723983, 835365, 2171949, 3619915, 10859745, 111214927, 333644781, 556074635, 1445794051, 1668223905, 4337382153, 7228970255, 21686910765]

約数ペア:

[(1, 21686910765), (3, 7228970255), (5, 4337382153), (13, 1668223905), (15, 1445794051), (39, 556074635), (65, 333644781), (195, 111214927), (1997, 10859745), (5991, 3619915), (9985, 2171949), (25961, 835365), (29955, 723983), (55691, 389415), (77883, 278455), (129805, 167073)]