21519459

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1657}}^1$

素因数の和:1716

約数の個数: 32

約数和(自身を含む): 35282240

約数和(自身を除く): 13762781

約数列:

[1, 3, 9, 13, 27, 37, 39, 111, 117, 333, 351, 481, 999, 1443, 1657, 4329, 4971, 12987, 14913, 21541, 44739, 61309, 64623, 183927, 193869, 551781, 581607, 797017, 1655343, 2391051, 7173153, 21519459]

約数ペア:

[(1, 21519459), (3, 7173153), (9, 2391051), (13, 1655343), (27, 797017), (37, 581607), (39, 551781), (111, 193869), (117, 183927), (333, 64623), (351, 61309), (481, 44739), (999, 21541), (1443, 14913), (1657, 12987), (4329, 4971)]