12420220

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 27151488

約数和(自身を除く): 14731268

約数列:

[1, 2, 4, 5, 10, 20, 47, 73, 94, 146, 181, 188, 235, 292, 362, 365, 470, 724, 730, 905, 940, 1460, 1810, 3431, 3620, 6862, 8507, 13213, 13724, 17014, 17155, 26426, 34028, 34310, 42535, 52852, 66065, 68620, 85070, 132130, 170140, 264260, 621011, 1242022, 2484044, 3105055, 6210110, 12420220]

約数ペア:

[(1, 12420220), (2, 6210110), (4, 3105055), (5, 2484044), (10, 1242022), (20, 621011), (47, 264260), (73, 170140), (94, 132130), (146, 85070), (181, 68620), (188, 66065), (235, 52852), (292, 42535), (362, 34310), (365, 34028), (470, 26426), (724, 17155), (730, 17014), (905, 13724), (940, 13213), (1460, 8507), (1810, 6862), (3431, 3620)]