6655540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 14636160

約数和(自身を除く): 7980620

約数列:

[1, 2, 4, 5, 10, 20, 43, 71, 86, 109, 142, 172, 215, 218, 284, 355, 430, 436, 545, 710, 860, 1090, 1420, 2180, 3053, 4687, 6106, 7739, 9374, 12212, 15265, 15478, 18748, 23435, 30530, 30956, 38695, 46870, 61060, 77390, 93740, 154780, 332777, 665554, 1331108, 1663885, 3327770, 6655540]

約数ペア:

[(1, 6655540), (2, 3327770), (4, 1663885), (5, 1331108), (10, 665554), (20, 332777), (43, 154780), (71, 93740), (86, 77390), (109, 61060), (142, 46870), (172, 38695), (215, 30956), (218, 30530), (284, 23435), (355, 18748), (430, 15478), (436, 15265), (545, 12212), (710, 9374), (860, 7739), (1090, 6106), (1420, 4687), (2180, 3053)]