21091135

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19087}}^1$

素因数の和:19122

約数の個数: 16

約数和(自身を含む): 28861056

約数和(自身を除く): 7769921

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 19087, 95435, 248131, 324479, 1240655, 1622395, 4218227, 21091135]

約数ペア:

[(1, 21091135), (5, 4218227), (13, 1622395), (17, 1240655), (65, 324479), (85, 248131), (221, 95435), (1105, 19087)]