21084105

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1777}}^1$

素因数の和:1905

約数の個数: 32

約数和(自身を含む): 38916864

約数和(自身を除く): 17832759

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 113, 339, 565, 791, 1695, 1777, 2373, 3955, 5331, 8885, 11865, 12439, 26655, 37317, 62195, 186585, 200801, 602403, 1004005, 1405607, 3012015, 4216821, 7028035, 21084105]

約数ペア:

[(1, 21084105), (3, 7028035), (5, 4216821), (7, 3012015), (15, 1405607), (21, 1004005), (35, 602403), (105, 200801), (113, 186585), (339, 62195), (565, 37317), (791, 26655), (1695, 12439), (1777, 11865), (2373, 8885), (3955, 5331)]