990319197

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{293}}^1$

素因数の和:562

約数の個数: 64

約数和(自身を含む): 1639249920

約数和(自身を除く): 648930723

約数列:

[1, 3, 7, 19, 21, 43, 57, 129, 133, 197, 293, 301, 399, 591, 817, 879, 903, 1379, 2051, 2451, 3743, 4137, 5567, 5719, 6153, 8471, 11229, 12599, 16701, 17157, 25413, 26201, 37797, 38969, 57721, 59297, 78603, 88193, 116907, 160949, 173163, 177891, 239381, 264579, 404047, 482847, 718143, 1096699, 1126643, 1212141, 1675667, 2482003, 3290097, 3379929, 5027001, 7446009, 7676893, 17374021, 23030679, 47158057, 52122063, 141474171, 330106399, 990319197]

約数ペア:

[(1, 990319197), (3, 330106399), (7, 141474171), (19, 52122063), (21, 47158057), (43, 23030679), (57, 17374021), (129, 7676893), (133, 7446009), (197, 5027001), (293, 3379929), (301, 3290097), (399, 2482003), (591, 1675667), (817, 1212141), (879, 1126643), (903, 1096699), (1379, 718143), (2051, 482847), (2451, 404047), (3743, 264579), (4137, 239381), (5567, 177891), (5719, 173163), (6153, 160949), (8471, 116907), (11229, 88193), (12599, 78603), (16701, 59297), (17157, 57721), (25413, 38969), (26201, 37797)]