165405680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1861}}^1$

素因数の和:1986

約数の個数: 80

約数和(自身を含む): 423910368

約数和(自身を除く): 258504688

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 101, 110, 176, 202, 220, 404, 440, 505, 808, 880, 1010, 1111, 1616, 1861, 2020, 2222, 3722, 4040, 4444, 5555, 7444, 8080, 8888, 9305, 11110, 14888, 17776, 18610, 20471, 22220, 29776, 37220, 40942, 44440, 74440, 81884, 88880, 102355, 148880, 163768, 187961, 204710, 327536, 375922, 409420, 751844, 818840, 939805, 1503688, 1637680, 1879610, 2067571, 3007376, 3759220, 4135142, 7518440, 8270284, 10337855, 15036880, 16540568, 20675710, 33081136, 41351420, 82702840, 165405680]

約数ペア:

[(1, 165405680), (2, 82702840), (4, 41351420), (5, 33081136), (8, 20675710), (10, 16540568), (11, 15036880), (16, 10337855), (20, 8270284), (22, 7518440), (40, 4135142), (44, 3759220), (55, 3007376), (80, 2067571), (88, 1879610), (101, 1637680), (110, 1503688), (176, 939805), (202, 818840), (220, 751844), (404, 409420), (440, 375922), (505, 327536), (808, 204710), (880, 187961), (1010, 163768), (1111, 148880), (1616, 102355), (1861, 88880), (2020, 81884), (2222, 74440), (3722, 44440), (4040, 40942), (4444, 37220), (5555, 29776), (7444, 22220), (8080, 20471), (8888, 18610), (9305, 17776), (11110, 14888)]