681680013

素因数分解:

$3^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{47807}}^1$

素因数の和:47921

約数の個数: 24

約数和(自身を含む): 1068221952

約数和(自身を除く): 386541939

約数列:

[1, 3, 7, 21, 49, 97, 147, 291, 679, 2037, 4753, 14259, 47807, 143421, 334649, 1003947, 2342543, 4637279, 7027629, 13911837, 32460953, 97382859, 227226671, 681680013]

約数ペア:

[(1, 681680013), (3, 227226671), (7, 97382859), (21, 32460953), (49, 13911837), (97, 7027629), (147, 4637279), (291, 2342543), (679, 1003947), (2037, 334649), (4753, 143421), (14259, 47807)]