64864865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{32191}}^1$

素因数の和:32240

約数の個数: 16

約数和(自身を含む): 86532096

約数和(自身を除く): 21667231

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 32191, 160955, 418483, 997921, 2092415, 4989605, 12972973, 64864865]

約数ペア:

[(1, 64864865), (5, 12972973), (13, 4989605), (31, 2092415), (65, 997921), (155, 418483), (403, 160955), (2015, 32191)]