21307540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{34367}}^1$

素因数の和:34407

約数の個数: 24

約数和(自身を含む): 46190592

約数和(自身を除く): 24883052

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 34367, 68734, 137468, 171835, 343670, 687340, 1065377, 2130754, 4261508, 5326885, 10653770, 21307540]

約数ペア:

[(1, 21307540), (2, 10653770), (4, 5326885), (5, 4261508), (10, 2130754), (20, 1065377), (31, 687340), (62, 343670), (124, 171835), (155, 137468), (310, 68734), (620, 34367)]