18806865

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{857}}^1$

素因数の和:902

約数の個数: 64

約数和(自身を含む): 39536640

約数和(自身を除く): 20729775

約数列:

[1, 3, 5, 7, 11, 15, 19, 21, 33, 35, 55, 57, 77, 95, 105, 133, 165, 209, 231, 285, 385, 399, 627, 665, 857, 1045, 1155, 1463, 1995, 2571, 3135, 4285, 4389, 5999, 7315, 9427, 12855, 16283, 17997, 21945, 28281, 29995, 47135, 48849, 65989, 81415, 89985, 113981, 141405, 179113, 197967, 244245, 329945, 341943, 537339, 569905, 895565, 989835, 1253791, 1709715, 2686695, 3761373, 6268955, 18806865]

約数ペア:

[(1, 18806865), (3, 6268955), (5, 3761373), (7, 2686695), (11, 1709715), (15, 1253791), (19, 989835), (21, 895565), (33, 569905), (35, 537339), (55, 341943), (57, 329945), (77, 244245), (95, 197967), (105, 179113), (133, 141405), (165, 113981), (209, 89985), (231, 81415), (285, 65989), (385, 48849), (399, 47135), (627, 29995), (665, 28281), (857, 21945), (1045, 17997), (1155, 16283), (1463, 12855), (1995, 9427), (2571, 7315), (3135, 5999), (4285, 4389)]