15991857

素因数分解:

$3^3\times 7^1\times {\mathrm{191}}^1\times {\mathrm{443}}^1$

素因数の和:650

約数の個数: 32

約数和(自身を含む): 27279360

約数和(自身を除く): 11287503

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 191, 443, 573, 1329, 1337, 1719, 3101, 3987, 4011, 5157, 9303, 11961, 12033, 27909, 36099, 83727, 84613, 253839, 592291, 761517, 1776873, 2284551, 5330619, 15991857]

約数ペア:

[(1, 15991857), (3, 5330619), (7, 2284551), (9, 1776873), (21, 761517), (27, 592291), (63, 253839), (189, 84613), (191, 83727), (443, 36099), (573, 27909), (1329, 12033), (1337, 11961), (1719, 9303), (3101, 5157), (3987, 4011)]