638534637

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{947}}^1$

素因数の和:1099

約数の個数: 64

約数和(自身を含む): 1089365760

約数和(自身を除く): 450831123

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 113, 117, 153, 221, 339, 351, 459, 663, 947, 1017, 1469, 1921, 1989, 2841, 3051, 4407, 5763, 5967, 8523, 12311, 13221, 16099, 17289, 24973, 25569, 36933, 39663, 48297, 51867, 74919, 107011, 110799, 144891, 209287, 224757, 321033, 332397, 434673, 627861, 674271, 963099, 1391143, 1819187, 1883583, 2889297, 4173429, 5457561, 5650749, 12520287, 16372683, 23649431, 37560861, 49118049, 70948293, 212844879, 638534637]

約数ペア:

[(1, 638534637), (3, 212844879), (9, 70948293), (13, 49118049), (17, 37560861), (27, 23649431), (39, 16372683), (51, 12520287), (113, 5650749), (117, 5457561), (153, 4173429), (221, 2889297), (339, 1883583), (351, 1819187), (459, 1391143), (663, 963099), (947, 674271), (1017, 627861), (1469, 434673), (1921, 332397), (1989, 321033), (2841, 224757), (3051, 209287), (4407, 144891), (5763, 110799), (5967, 107011), (8523, 74919), (12311, 51867), (13221, 48297), (16099, 39663), (17289, 36933), (24973, 25569)]