20778079

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{431}}^1$

素因数の和:606

約数の個数: 16

約数和(自身を含む): 24385536

約数和(自身を除く): 3607457

約数列:

[1, 7, 71, 97, 431, 497, 679, 3017, 6887, 30601, 41807, 48209, 214207, 292649, 2968297, 20778079]

約数ペア:

[(1, 20778079), (7, 2968297), (71, 292649), (97, 214207), (431, 48209), (497, 41807), (679, 30601), (3017, 6887)]