861828880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{457}}^1\times {\mathrm{2143}}^1$

素因数の和:2624

約数の個数: 80

約数和(自身を含む): 2191716864

約数和(自身を除く): 1329887984

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 457, 880, 914, 1828, 2143, 2285, 3656, 4286, 4570, 5027, 7312, 8572, 9140, 10054, 10715, 17144, 18280, 20108, 21430, 23573, 25135, 34288, 36560, 40216, 42860, 47146, 50270, 80432, 85720, 94292, 100540, 117865, 171440, 188584, 201080, 235730, 377168, 402160, 471460, 942920, 979351, 1885840, 1958702, 3917404, 4896755, 7834808, 9793510, 10772861, 15669616, 19587020, 21545722, 39174040, 43091444, 53864305, 78348080, 86182888, 107728610, 172365776, 215457220, 430914440, 861828880]

約数ペア:

[(1, 861828880), (2, 430914440), (4, 215457220), (5, 172365776), (8, 107728610), (10, 86182888), (11, 78348080), (16, 53864305), (20, 43091444), (22, 39174040), (40, 21545722), (44, 19587020), (55, 15669616), (80, 10772861), (88, 9793510), (110, 7834808), (176, 4896755), (220, 3917404), (440, 1958702), (457, 1885840), (880, 979351), (914, 942920), (1828, 471460), (2143, 402160), (2285, 377168), (3656, 235730), (4286, 201080), (4570, 188584), (5027, 171440), (7312, 117865), (8572, 100540), (9140, 94292), (10054, 85720), (10715, 80432), (17144, 50270), (18280, 47146), (20108, 42860), (21430, 40216), (23573, 36560), (25135, 34288)]