21555065

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{2131}}^1$

素因数の和:2177

約数の個数: 24

約数和(自身を含む): 31417152

約数和(自身を除く): 9862087

約数列:

[1, 5, 7, 17, 35, 85, 119, 289, 595, 1445, 2023, 2131, 10115, 10655, 14917, 36227, 74585, 181135, 253589, 615859, 1267945, 3079295, 4311013, 21555065]

約数ペア:

[(1, 21555065), (5, 4311013), (7, 3079295), (17, 1267945), (35, 615859), (85, 253589), (119, 181135), (289, 74585), (595, 36227), (1445, 14917), (2023, 10655), (2131, 10115)]