12879740

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 28153440

約数和(自身を除く): 15273700

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 113, 139, 164, 205, 226, 278, 410, 452, 556, 565, 695, 820, 1130, 1390, 2260, 2780, 4633, 5699, 9266, 11398, 15707, 18532, 22796, 23165, 28495, 31414, 46330, 56990, 62828, 78535, 92660, 113980, 157070, 314140, 643987, 1287974, 2575948, 3219935, 6439870, 12879740]

約数ペア:

[(1, 12879740), (2, 6439870), (4, 3219935), (5, 2575948), (10, 1287974), (20, 643987), (41, 314140), (82, 157070), (113, 113980), (139, 92660), (164, 78535), (205, 62828), (226, 56990), (278, 46330), (410, 31414), (452, 28495), (556, 23165), (565, 22796), (695, 18532), (820, 15707), (1130, 11398), (1390, 9266), (2260, 5699), (2780, 4633)]