20091111920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{556849}}^1$

素因数の和:556914

約数の個数: 80

約数和(自身を含む): 52201346400

約数和(自身を除く): 32110234480

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 41, 44, 55, 80, 82, 88, 110, 164, 176, 205, 220, 328, 410, 440, 451, 656, 820, 880, 902, 1640, 1804, 2255, 3280, 3608, 4510, 7216, 9020, 18040, 36080, 556849, 1113698, 2227396, 2784245, 4454792, 5568490, 6125339, 8909584, 11136980, 12250678, 22273960, 22830809, 24501356, 30626695, 44547920, 45661618, 49002712, 61253390, 91323236, 98005424, 114154045, 122506780, 182646472, 228308090, 245013560, 251138899, 365292944, 456616180, 490027120, 502277798, 913232360, 1004555596, 1255694495, 1826464720, 2009111192, 2511388990, 4018222384, 5022777980, 10045555960, 20091111920]

約数ペア:

[(1, 20091111920), (2, 10045555960), (4, 5022777980), (5, 4018222384), (8, 2511388990), (10, 2009111192), (11, 1826464720), (16, 1255694495), (20, 1004555596), (22, 913232360), (40, 502277798), (41, 490027120), (44, 456616180), (55, 365292944), (80, 251138899), (82, 245013560), (88, 228308090), (110, 182646472), (164, 122506780), (176, 114154045), (205, 98005424), (220, 91323236), (328, 61253390), (410, 49002712), (440, 45661618), (451, 44547920), (656, 30626695), (820, 24501356), (880, 22830809), (902, 22273960), (1640, 12250678), (1804, 11136980), (2255, 8909584), (3280, 6125339), (3608, 5568490), (4510, 4454792), (7216, 2784245), (9020, 2227396), (18040, 1113698), (36080, 556849)]