20559679

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{487}}^1$

素因数の和:694

約数の個数: 16

約数和(自身を含む): 24329728

約数和(自身を除く): 3770049

約数列:

[1, 7, 37, 163, 259, 487, 1141, 3409, 6031, 18019, 42217, 79381, 126133, 555667, 2937097, 20559679]

約数ペア:

[(1, 20559679), (7, 2937097), (37, 555667), (163, 126133), (259, 79381), (487, 42217), (1141, 18019), (3409, 6031)]