21118671

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{5881}}^1$

素因数の和:5916

約数の個数: 32

約数和(自身を含む): 37644800

約数和(自身を除く): 16526129

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 189, 399, 513, 1197, 3591, 5881, 17643, 41167, 52929, 111739, 123501, 158787, 335217, 370503, 782173, 1005651, 1111509, 2346519, 3016953, 7039557, 21118671]

約数ペア:

[(1, 21118671), (3, 7039557), (7, 3016953), (9, 2346519), (19, 1111509), (21, 1005651), (27, 782173), (57, 370503), (63, 335217), (133, 158787), (171, 123501), (189, 111739), (399, 52929), (513, 41167), (1197, 17643), (3591, 5881)]