19991730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{2089}}^1$

素因数の和:2139

約数の個数: 64

約数和(自身を含む): 54172800

約数和(自身を除く): 34181070

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 29, 30, 33, 55, 58, 66, 87, 110, 145, 165, 174, 290, 319, 330, 435, 638, 870, 957, 1595, 1914, 2089, 3190, 4178, 4785, 6267, 9570, 10445, 12534, 20890, 22979, 31335, 45958, 60581, 62670, 68937, 114895, 121162, 137874, 181743, 229790, 302905, 344685, 363486, 605810, 666391, 689370, 908715, 1332782, 1817430, 1999173, 3331955, 3998346, 6663910, 9995865, 19991730]

約数ペア:

[(1, 19991730), (2, 9995865), (3, 6663910), (5, 3998346), (6, 3331955), (10, 1999173), (11, 1817430), (15, 1332782), (22, 908715), (29, 689370), (30, 666391), (33, 605810), (55, 363486), (58, 344685), (66, 302905), (87, 229790), (110, 181743), (145, 137874), (165, 121162), (174, 114895), (290, 68937), (319, 62670), (330, 60581), (435, 45958), (638, 31335), (870, 22979), (957, 20890), (1595, 12534), (1914, 10445), (2089, 9570), (3190, 6267), (4178, 4785)]