18721612

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2707}}^1$

素因数の和:2750

約数の個数: 48

約数和(自身を含む): 42461440

約数和(自身を除く): 23739828

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 52, 76, 91, 133, 182, 247, 266, 364, 494, 532, 988, 1729, 2707, 3458, 5414, 6916, 10828, 18949, 35191, 37898, 51433, 70382, 75796, 102866, 140764, 205732, 246337, 360031, 492674, 668629, 720062, 985348, 1337258, 1440124, 2674516, 4680403, 9360806, 18721612]

約数ペア:

[(1, 18721612), (2, 9360806), (4, 4680403), (7, 2674516), (13, 1440124), (14, 1337258), (19, 985348), (26, 720062), (28, 668629), (38, 492674), (52, 360031), (76, 246337), (91, 205732), (133, 140764), (182, 102866), (247, 75796), (266, 70382), (364, 51433), (494, 37898), (532, 35191), (988, 18949), (1729, 10828), (2707, 6916), (3458, 5414)]