78959620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^2\times {\mathrm{1061}}^1$

素因数の和:1192

約数の個数: 36

約数和(自身を含む): 168736932

約数和(自身を除く): 89777312

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1061, 1220, 2122, 3721, 4244, 5305, 7442, 10610, 14884, 18605, 21220, 37210, 64721, 74420, 129442, 258884, 323605, 647210, 1294420, 3947981, 7895962, 15791924, 19739905, 39479810, 78959620]

約数ペア:

[(1, 78959620), (2, 39479810), (4, 19739905), (5, 15791924), (10, 7895962), (20, 3947981), (61, 1294420), (122, 647210), (244, 323605), (305, 258884), (610, 129442), (1061, 74420), (1220, 64721), (2122, 37210), (3721, 21220), (4244, 18605), (5305, 14884), (7442, 10610)]