2040406020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{81551}}^1$

素因数の和:81705

約数の個数: 72

約数和(自身を含む): 6233834880

約数和(自身を除く): 4193428860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 417, 556, 695, 834, 1251, 1390, 1668, 2085, 2502, 2780, 4170, 5004, 6255, 8340, 12510, 25020, 81551, 163102, 244653, 326204, 407755, 489306, 733959, 815510, 978612, 1223265, 1467918, 1631020, 2446530, 2935836, 3669795, 4893060, 7339590, 11335589, 14679180, 22671178, 34006767, 45342356, 56677945, 68013534, 102020301, 113355890, 136027068, 170033835, 204040602, 226711780, 340067670, 408081204, 510101505, 680135340, 1020203010, 2040406020]

約数ペア:

[(1, 2040406020), (2, 1020203010), (3, 680135340), (4, 510101505), (5, 408081204), (6, 340067670), (9, 226711780), (10, 204040602), (12, 170033835), (15, 136027068), (18, 113355890), (20, 102020301), (30, 68013534), (36, 56677945), (45, 45342356), (60, 34006767), (90, 22671178), (139, 14679180), (180, 11335589), (278, 7339590), (417, 4893060), (556, 3669795), (695, 2935836), (834, 2446530), (1251, 1631020), (1390, 1467918), (1668, 1223265), (2085, 978612), (2502, 815510), (2780, 733959), (4170, 489306), (5004, 407755), (6255, 326204), (8340, 244653), (12510, 163102), (25020, 81551)]