18420017

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 24295680

約数和(自身を除く): 5875663

約数列:

[1, 7, 11, 29, 73, 77, 113, 203, 319, 511, 791, 803, 1243, 2117, 2233, 3277, 5621, 8249, 8701, 14819, 22939, 23287, 36047, 57743, 90739, 163009, 239221, 252329, 635173, 1674547, 2631431, 18420017]

約数ペア:

[(1, 18420017), (7, 2631431), (11, 1674547), (29, 635173), (73, 252329), (77, 239221), (113, 163009), (203, 90739), (319, 57743), (511, 36047), (791, 23287), (803, 22939), (1243, 14819), (2117, 8701), (2233, 8249), (3277, 5621)]