51818440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{641}}^1$

素因数の和:742

約数の個数: 64

約数和(自身を含む): 122031360

約数和(自身を除く): 70212920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 47, 86, 94, 172, 188, 215, 235, 344, 376, 430, 470, 641, 860, 940, 1282, 1720, 1880, 2021, 2564, 3205, 4042, 5128, 6410, 8084, 10105, 12820, 16168, 20210, 25640, 27563, 30127, 40420, 55126, 60254, 80840, 110252, 120508, 137815, 150635, 220504, 241016, 275630, 301270, 551260, 602540, 1102520, 1205080, 1295461, 2590922, 5181844, 6477305, 10363688, 12954610, 25909220, 51818440]

約数ペア:

[(1, 51818440), (2, 25909220), (4, 12954610), (5, 10363688), (8, 6477305), (10, 5181844), (20, 2590922), (40, 1295461), (43, 1205080), (47, 1102520), (86, 602540), (94, 551260), (172, 301270), (188, 275630), (215, 241016), (235, 220504), (344, 150635), (376, 137815), (430, 120508), (470, 110252), (641, 80840), (860, 60254), (940, 55126), (1282, 40420), (1720, 30127), (1880, 27563), (2021, 25640), (2564, 20210), (3205, 16168), (4042, 12820), (5128, 10105), (6410, 8084)]