21969025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2939}}^1$

素因数の和:2985

約数の個数: 24

約数和(自身を含む): 30623040

約数和(自身を除く): 8654015

約数列:

[1, 5, 13, 23, 25, 65, 115, 299, 325, 575, 1495, 2939, 7475, 14695, 38207, 67597, 73475, 191035, 337985, 878761, 955175, 1689925, 4393805, 21969025]

約数ペア:

[(1, 21969025), (5, 4393805), (13, 1689925), (23, 955175), (25, 878761), (65, 337985), (115, 191035), (299, 73475), (325, 67597), (575, 38207), (1495, 14695), (2939, 7475)]