18994690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{359}}^1$

素因数の和:427

約数の個数: 64

約数和(自身を含む): 41368320

約数和(自身を除く): 22373630

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 37, 55, 65, 74, 110, 130, 143, 185, 286, 359, 370, 407, 481, 715, 718, 814, 962, 1430, 1795, 2035, 2405, 3590, 3949, 4070, 4667, 4810, 5291, 7898, 9334, 10582, 13283, 19745, 23335, 26455, 26566, 39490, 46670, 51337, 52910, 66415, 102674, 132830, 146113, 172679, 256685, 292226, 345358, 513370, 730565, 863395, 1461130, 1726790, 1899469, 3798938, 9497345, 18994690]

約数ペア:

[(1, 18994690), (2, 9497345), (5, 3798938), (10, 1899469), (11, 1726790), (13, 1461130), (22, 863395), (26, 730565), (37, 513370), (55, 345358), (65, 292226), (74, 256685), (110, 172679), (130, 146113), (143, 132830), (185, 102674), (286, 66415), (359, 52910), (370, 51337), (407, 46670), (481, 39490), (715, 26566), (718, 26455), (814, 23335), (962, 19745), (1430, 13283), (1795, 10582), (2035, 9334), (2405, 7898), (3590, 5291), (3949, 4810), (4070, 4667)]