20543025

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{11909}}^1$

素因数の和:11945

約数の個数: 24

約数和(自身を含む): 35444160

約数和(自身を除く): 14901135

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 345, 575, 1725, 11909, 35727, 59545, 178635, 273907, 297725, 821721, 893175, 1369535, 4108605, 6847675, 20543025]

約数ペア:

[(1, 20543025), (3, 6847675), (5, 4108605), (15, 1369535), (23, 893175), (25, 821721), (69, 297725), (75, 273907), (115, 178635), (345, 59545), (575, 35727), (1725, 11909)]