42788221

素因数分解:

$7^4\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:350

約数の個数: 20

約数和(自身を含む): 50821344

約数和(自身を除く): 8033123

約数列:

[1, 7, 49, 71, 251, 343, 497, 1757, 2401, 3479, 12299, 17821, 24353, 86093, 124747, 170471, 602651, 873229, 6112603, 42788221]

約数ペア:

[(1, 42788221), (7, 6112603), (49, 873229), (71, 602651), (251, 170471), (343, 124747), (497, 86093), (1757, 24353), (2401, 17821), (3479, 12299)]