4004440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{479}}^1$

素因数の和:520

約数の個数: 64

約数和(自身を含む): 10368000

約数和(自身を除く): 6363560

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 479, 760, 836, 958, 1045, 1672, 1916, 2090, 2395, 3832, 4180, 4790, 5269, 8360, 9101, 9580, 10538, 18202, 19160, 21076, 26345, 36404, 42152, 45505, 52690, 72808, 91010, 100111, 105380, 182020, 200222, 210760, 364040, 400444, 500555, 800888, 1001110, 2002220, 4004440]

約数ペア:

[(1, 4004440), (2, 2002220), (4, 1001110), (5, 800888), (8, 500555), (10, 400444), (11, 364040), (19, 210760), (20, 200222), (22, 182020), (38, 105380), (40, 100111), (44, 91010), (55, 72808), (76, 52690), (88, 45505), (95, 42152), (110, 36404), (152, 26345), (190, 21076), (209, 19160), (220, 18202), (380, 10538), (418, 9580), (440, 9101), (479, 8360), (760, 5269), (836, 4790), (958, 4180), (1045, 3832), (1672, 2395), (1916, 2090)]