12713260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1279}}^1$

素因数の和:1366

約数の個数: 48

約数和(自身を含む): 30965760

約数和(自身を除く): 18252500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1279, 1420, 1988, 2485, 2558, 4970, 5116, 6395, 8953, 9940, 12790, 17906, 25580, 35812, 44765, 89530, 90809, 179060, 181618, 363236, 454045, 635663, 908090, 1271326, 1816180, 2542652, 3178315, 6356630, 12713260]

約数ペア:

[(1, 12713260), (2, 6356630), (4, 3178315), (5, 2542652), (7, 1816180), (10, 1271326), (14, 908090), (20, 635663), (28, 454045), (35, 363236), (70, 181618), (71, 179060), (140, 90809), (142, 89530), (284, 44765), (355, 35812), (497, 25580), (710, 17906), (994, 12790), (1279, 9940), (1420, 8953), (1988, 6395), (2485, 5116), (2558, 4970)]