20780414

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:332

約数の個数: 32

約数和(自身を含む): 34452000

約数和(自身を除く): 13671586

約数列:

[1, 2, 19, 29, 38, 58, 109, 173, 218, 346, 551, 1102, 2071, 3161, 3287, 4142, 5017, 6322, 6574, 10034, 18857, 37714, 60059, 95323, 120118, 190646, 358283, 546853, 716566, 1093706, 10390207, 20780414]

約数ペア:

[(1, 20780414), (2, 10390207), (19, 1093706), (29, 716566), (38, 546853), (58, 358283), (109, 190646), (173, 120118), (218, 95323), (346, 60059), (551, 37714), (1102, 18857), (2071, 10034), (3161, 6574), (3287, 6322), (4142, 5017)]