18617739

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1609}}^1$

素因数の和:1667

約数の個数: 32

約数和(自身を含む): 30912000

約数和(自身を除く): 12294261

約数列:

[1, 3, 7, 19, 21, 29, 57, 87, 133, 203, 399, 551, 609, 1609, 1653, 3857, 4827, 11263, 11571, 30571, 33789, 46661, 91713, 139983, 213997, 326627, 641991, 886559, 979881, 2659677, 6205913, 18617739]

約数ペア:

[(1, 18617739), (3, 6205913), (7, 2659677), (19, 979881), (21, 886559), (29, 641991), (57, 326627), (87, 213997), (133, 139983), (203, 91713), (399, 46661), (551, 33789), (609, 30571), (1609, 11571), (1653, 11263), (3857, 4827)]