8082980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 18144000

約数和(自身を除く): 10061020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 239, 356, 380, 445, 478, 890, 956, 1195, 1691, 1780, 2390, 3382, 4541, 4780, 6764, 8455, 9082, 16910, 18164, 21271, 22705, 33820, 42542, 45410, 85084, 90820, 106355, 212710, 404149, 425420, 808298, 1616596, 2020745, 4041490, 8082980]

約数ペア:

[(1, 8082980), (2, 4041490), (4, 2020745), (5, 1616596), (10, 808298), (19, 425420), (20, 404149), (38, 212710), (76, 106355), (89, 90820), (95, 85084), (178, 45410), (190, 42542), (239, 33820), (356, 22705), (380, 21271), (445, 18164), (478, 16910), (890, 9082), (956, 8455), (1195, 6764), (1691, 4780), (1780, 4541), (2390, 3382)]