20775025

素因数分解:

$5^2\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:313

約数の個数: 24

約数和(自身を含む): 26645120

約数和(自身を除く): 5870095

約数列:

[1, 5, 25, 67, 79, 157, 335, 395, 785, 1675, 1975, 3925, 5293, 10519, 12403, 26465, 52595, 62015, 132325, 262975, 310075, 831001, 4155005, 20775025]

約数ペア:

[(1, 20775025), (5, 4155005), (25, 831001), (67, 310075), (79, 262975), (157, 132325), (335, 62015), (395, 52595), (785, 26465), (1675, 12403), (1975, 10519), (3925, 5293)]