19768025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{241}}^1$

素因数の和:461

約数の個数: 24

約数和(自身を含む): 26196984

約数和(自身を除く): 6428959

約数列:

[1, 5, 17, 25, 85, 193, 241, 425, 965, 1205, 3281, 4097, 4825, 6025, 16405, 20485, 46513, 82025, 102425, 232565, 790721, 1162825, 3953605, 19768025]

約数ペア:

[(1, 19768025), (5, 3953605), (17, 1162825), (25, 790721), (85, 232565), (193, 102425), (241, 82025), (425, 46513), (965, 20485), (1205, 16405), (3281, 6025), (4097, 4825)]