21756210

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{491}}^1$

素因数の和:719

約数の個数: 64

約数和(自身を含む): 60079104

約数和(自身を除く): 38322894

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 211, 422, 491, 633, 982, 1055, 1266, 1473, 1477, 2110, 2455, 2946, 2954, 3165, 3437, 4431, 4910, 6330, 6874, 7365, 7385, 8862, 10311, 14730, 14770, 17185, 20622, 22155, 34370, 44310, 51555, 103110, 103601, 207202, 310803, 518005, 621606, 725207, 1036010, 1450414, 1554015, 2175621, 3108030, 3626035, 4351242, 7252070, 10878105, 21756210]

約数ペア:

[(1, 21756210), (2, 10878105), (3, 7252070), (5, 4351242), (6, 3626035), (7, 3108030), (10, 2175621), (14, 1554015), (15, 1450414), (21, 1036010), (30, 725207), (35, 621606), (42, 518005), (70, 310803), (105, 207202), (210, 103601), (211, 103110), (422, 51555), (491, 44310), (633, 34370), (982, 22155), (1055, 20622), (1266, 17185), (1473, 14770), (1477, 14730), (2110, 10311), (2455, 8862), (2946, 7385), (2954, 7365), (3165, 6874), (3437, 6330), (4431, 4910)]