205408025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{443}}^1\times {\mathrm{1091}}^1$

素因数の和:1561

約数の個数: 24

約数和(自身を含む): 270545184

約数和(自身を除く): 65137159

約数列:

[1, 5, 17, 25, 85, 425, 443, 1091, 2215, 5455, 7531, 11075, 18547, 27275, 37655, 92735, 188275, 463675, 483313, 2416565, 8216321, 12082825, 41081605, 205408025]

約数ペア:

[(1, 205408025), (5, 41081605), (17, 12082825), (25, 8216321), (85, 2416565), (425, 483313), (443, 463675), (1091, 188275), (2215, 92735), (5455, 37655), (7531, 27275), (11075, 18547)]