640705194

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{624469}}^1$

素因数の和:624499

約数の個数: 32

約数和(自身を含む): 1498728000

約数和(自身を除く): 858022806

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 114, 171, 342, 513, 1026, 624469, 1248938, 1873407, 3746814, 5620221, 11240442, 11864911, 16860663, 23729822, 33721326, 35594733, 71189466, 106784199, 213568398, 320352597, 640705194]

約数ペア:

[(1, 640705194), (2, 320352597), (3, 213568398), (6, 106784199), (9, 71189466), (18, 35594733), (19, 33721326), (27, 23729822), (38, 16860663), (54, 11864911), (57, 11240442), (114, 5620221), (171, 3746814), (342, 1873407), (513, 1248938), (1026, 624469)]