18980822020

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{181}}^1\times {\mathrm{49003}}^1$

素因数の和:49300

約数の個数: 48

約数和(自身を含む): 40455350208

約数和(自身を除く): 21474528188

約数列:

[1, 2, 4, 5, 10, 20, 107, 181, 214, 362, 428, 535, 724, 905, 1070, 1810, 2140, 3620, 19367, 38734, 49003, 77468, 96835, 98006, 193670, 196012, 245015, 387340, 490030, 980060, 5243321, 8869543, 10486642, 17739086, 20973284, 26216605, 35478172, 44347715, 52433210, 88695430, 104866420, 177390860, 949041101, 1898082202, 3796164404, 4745205505, 9490411010, 18980822020]

約数ペア:

[(1, 18980822020), (2, 9490411010), (4, 4745205505), (5, 3796164404), (10, 1898082202), (20, 949041101), (107, 177390860), (181, 104866420), (214, 88695430), (362, 52433210), (428, 44347715), (535, 35478172), (724, 26216605), (905, 20973284), (1070, 17739086), (1810, 10486642), (2140, 8869543), (3620, 5243321), (19367, 980060), (38734, 490030), (49003, 387340), (77468, 245015), (96835, 196012), (98006, 193670)]