678989961

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{18541}}^1$

素因数の和:18873

約数の個数: 24

約数和(自身を含む): 1059638216

約数和(自身を除く): 380648255

約数列:

[1, 3, 9, 13, 39, 117, 313, 939, 2817, 4069, 12207, 18541, 36621, 55623, 166869, 241033, 723099, 2169297, 5803333, 17409999, 52229997, 75443329, 226329987, 678989961]

約数ペア:

[(1, 678989961), (3, 226329987), (9, 75443329), (13, 52229997), (39, 17409999), (117, 5803333), (313, 2169297), (939, 723099), (2817, 241033), (4069, 166869), (12207, 55623), (18541, 36621)]