19278025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2579}}^1$

素因数の和:2625

約数の個数: 24

約数和(自身を含む): 26873280

約数和(自身を除く): 7595255

約数列:

[1, 5, 13, 23, 25, 65, 115, 299, 325, 575, 1495, 2579, 7475, 12895, 33527, 59317, 64475, 167635, 296585, 771121, 838175, 1482925, 3855605, 19278025]

約数ペア:

[(1, 19278025), (5, 3855605), (13, 1482925), (23, 838175), (25, 771121), (65, 296585), (115, 167635), (299, 64475), (325, 59317), (575, 33527), (1495, 12895), (2579, 7475)]