778897490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{2081}}^1\times {\mathrm{5347}}^1$

素因数の和:7442

約数の個数: 32

約数和(自身を含む): 1603373184

約数和(自身を除く): 824475694

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 2081, 4162, 5347, 10405, 10694, 14567, 20810, 26735, 29134, 37429, 53470, 72835, 74858, 145670, 187145, 374290, 11127107, 22254214, 55635535, 77889749, 111271070, 155779498, 389448745, 778897490]

約数ペア:

[(1, 778897490), (2, 389448745), (5, 155779498), (7, 111271070), (10, 77889749), (14, 55635535), (35, 22254214), (70, 11127107), (2081, 374290), (4162, 187145), (5347, 145670), (10405, 74858), (10694, 72835), (14567, 53470), (20810, 37429), (26735, 29134)]