21655075

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2897}}^1$

素因数の和:2943

約数の個数: 24

約数和(自身を含む): 30185568

約数和(自身を除く): 8530493

約数列:

[1, 5, 13, 23, 25, 65, 115, 299, 325, 575, 1495, 2897, 7475, 14485, 37661, 66631, 72425, 188305, 333155, 866203, 941525, 1665775, 4331015, 21655075]

約数ペア:

[(1, 21655075), (5, 4331015), (13, 1665775), (23, 941525), (25, 866203), (65, 333155), (115, 188305), (299, 72425), (325, 66631), (575, 37661), (1495, 14485), (2897, 7475)]