21203585

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{1091}}^1$

素因数の和:1145

約数の個数: 24

約数和(自身を含む): 28776384

約数和(自身を除く): 7572799

約数列:

[1, 5, 13, 23, 65, 115, 169, 299, 845, 1091, 1495, 3887, 5455, 14183, 19435, 25093, 70915, 125465, 184379, 326209, 921895, 1631045, 4240717, 21203585]

約数ペア:

[(1, 21203585), (5, 4240717), (13, 1631045), (23, 921895), (65, 326209), (115, 184379), (169, 125465), (299, 70915), (845, 25093), (1091, 19435), (1495, 14183), (3887, 5455)]