18725889

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 32175360

約数和(自身を除く): 13449471

約数列:

[1, 3, 7, 13, 21, 39, 41, 49, 91, 123, 147, 239, 273, 287, 533, 637, 717, 861, 1599, 1673, 1911, 2009, 3107, 3731, 5019, 6027, 9321, 9799, 11193, 11711, 21749, 26117, 29397, 35133, 65247, 68593, 78351, 127387, 152243, 205779, 382161, 456729, 480151, 891709, 1440453, 2675127, 6241963, 18725889]

約数ペア:

[(1, 18725889), (3, 6241963), (7, 2675127), (13, 1440453), (21, 891709), (39, 480151), (41, 456729), (49, 382161), (91, 205779), (123, 152243), (147, 127387), (239, 78351), (273, 68593), (287, 65247), (533, 35133), (637, 29397), (717, 26117), (861, 21749), (1599, 11711), (1673, 11193), (1911, 9799), (2009, 9321), (3107, 6027), (3731, 5019)]