20563175

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{251}}^1$

素因数の和:403

約数の個数: 24

約数和(自身を含む): 26717040

約数和(自身を除く): 6153865

約数列:

[1, 5, 25, 29, 113, 145, 251, 565, 725, 1255, 2825, 3277, 6275, 7279, 16385, 28363, 36395, 81925, 141815, 181975, 709075, 822527, 4112635, 20563175]

約数ペア:

[(1, 20563175), (5, 4112635), (25, 822527), (29, 709075), (113, 181975), (145, 141815), (251, 81925), (565, 36395), (725, 28363), (1255, 16385), (2825, 7279), (3277, 6275)]