21874437

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 36295168

約数和(自身を除く): 14420731

約数列:

[1, 3, 9, 13, 31, 37, 39, 93, 111, 117, 163, 279, 333, 403, 481, 489, 1147, 1209, 1443, 1467, 2119, 3441, 3627, 4329, 5053, 6031, 6357, 10323, 14911, 15159, 18093, 19071, 44733, 45477, 54279, 65689, 78403, 134199, 186961, 197067, 235209, 560883, 591201, 705627, 1682649, 2430493, 7291479, 21874437]

約数ペア:

[(1, 21874437), (3, 7291479), (9, 2430493), (13, 1682649), (31, 705627), (37, 591201), (39, 560883), (93, 235209), (111, 197067), (117, 186961), (163, 134199), (279, 78403), (333, 65689), (403, 54279), (481, 45477), (489, 44733), (1147, 19071), (1209, 18093), (1443, 15159), (1467, 14911), (2119, 10323), (3441, 6357), (3627, 6031), (4329, 5053)]