21174531

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53069}}^1$

素因数の和:53098

約数の個数: 16

約数和(自身を含む): 33964800

約数和(自身を除く): 12790269

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53069, 159207, 371483, 1008311, 1114449, 3024933, 7058177, 21174531]

約数ペア:

[(1, 21174531), (3, 7058177), (7, 3024933), (19, 1114449), (21, 1008311), (57, 371483), (133, 159207), (399, 53069)]