20394997

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{967}}^1$

素因数の和:1128

約数の個数: 16

約数和(自身を含む): 24532992

約数和(自身を除く): 4137995

約数列:

[1, 7, 23, 131, 161, 917, 967, 3013, 6769, 21091, 22241, 126677, 155687, 886739, 2913571, 20394997]

約数ペア:

[(1, 20394997), (7, 2913571), (23, 886739), (131, 155687), (161, 126677), (917, 22241), (967, 21091), (3013, 6769)]