2557860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{479}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 7257600

約数和(自身を除く): 4699740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 89, 178, 267, 356, 445, 479, 534, 890, 958, 1068, 1335, 1437, 1780, 1916, 2395, 2670, 2874, 4790, 5340, 5748, 7185, 9580, 14370, 28740, 42631, 85262, 127893, 170524, 213155, 255786, 426310, 511572, 639465, 852620, 1278930, 2557860]

約数ペア:

[(1, 2557860), (2, 1278930), (3, 852620), (4, 639465), (5, 511572), (6, 426310), (10, 255786), (12, 213155), (15, 170524), (20, 127893), (30, 85262), (60, 42631), (89, 28740), (178, 14370), (267, 9580), (356, 7185), (445, 5748), (479, 5340), (534, 4790), (890, 2874), (958, 2670), (1068, 2395), (1335, 1916), (1437, 1780)]