18202779

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:209

約数の個数: 64

約数和(自身を含む): 33561600

約数和(自身を除く): 15358821

約数列:

[1, 3, 7, 9, 19, 21, 27, 37, 57, 63, 111, 133, 137, 171, 189, 259, 333, 399, 411, 513, 703, 777, 959, 999, 1197, 1233, 2109, 2331, 2603, 2877, 3591, 3699, 4921, 5069, 6327, 6993, 7809, 8631, 14763, 15207, 18221, 18981, 23427, 25893, 35483, 44289, 45621, 54663, 70281, 96311, 106449, 132867, 136863, 163989, 288933, 319347, 491967, 674177, 866799, 958041, 2022531, 2600397, 6067593, 18202779]

約数ペア:

[(1, 18202779), (3, 6067593), (7, 2600397), (9, 2022531), (19, 958041), (21, 866799), (27, 674177), (37, 491967), (57, 319347), (63, 288933), (111, 163989), (133, 136863), (137, 132867), (171, 106449), (189, 96311), (259, 70281), (333, 54663), (399, 45621), (411, 44289), (513, 35483), (703, 25893), (777, 23427), (959, 18981), (999, 18221), (1197, 15207), (1233, 14763), (2109, 8631), (2331, 7809), (2603, 6993), (2877, 6327), (3591, 5069), (3699, 4921)]