19786555

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{349}}^1$

素因数の和:423

約数の個数: 32

約数和(自身を含む): 27216000

約数和(自身を除く): 7429445

約数列:

[1, 5, 17, 23, 29, 85, 115, 145, 349, 391, 493, 667, 1745, 1955, 2465, 3335, 5933, 8027, 10121, 11339, 29665, 40135, 50605, 56695, 136459, 172057, 232783, 682295, 860285, 1163915, 3957311, 19786555]

約数ペア:

[(1, 19786555), (5, 3957311), (17, 1163915), (23, 860285), (29, 682295), (85, 232783), (115, 172057), (145, 136459), (349, 56695), (391, 50605), (493, 40135), (667, 29665), (1745, 11339), (1955, 10121), (2465, 8027), (3335, 5933)]