81936040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{1063}}^1$

素因数の和:1162

約数の個数: 64

約数和(自身を含む): 193052160

約数和(自身を除く): 111116120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 47, 82, 94, 164, 188, 205, 235, 328, 376, 410, 470, 820, 940, 1063, 1640, 1880, 1927, 2126, 3854, 4252, 5315, 7708, 8504, 9635, 10630, 15416, 19270, 21260, 38540, 42520, 43583, 49961, 77080, 87166, 99922, 174332, 199844, 217915, 249805, 348664, 399688, 435830, 499610, 871660, 999220, 1743320, 1998440, 2048401, 4096802, 8193604, 10242005, 16387208, 20484010, 40968020, 81936040]

約数ペア:

[(1, 81936040), (2, 40968020), (4, 20484010), (5, 16387208), (8, 10242005), (10, 8193604), (20, 4096802), (40, 2048401), (41, 1998440), (47, 1743320), (82, 999220), (94, 871660), (164, 499610), (188, 435830), (205, 399688), (235, 348664), (328, 249805), (376, 217915), (410, 199844), (470, 174332), (820, 99922), (940, 87166), (1063, 77080), (1640, 49961), (1880, 43583), (1927, 42520), (2126, 38540), (3854, 21260), (4252, 19270), (5315, 15416), (7708, 10630), (8504, 9635)]