21039765

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{34211}}^1$

素因数の和:34260

約数の個数: 16

約数和(自身を含む): 34485696

約数和(自身を除く): 13445931

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 34211, 102633, 171055, 513165, 1402651, 4207953, 7013255, 21039765]

約数ペア:

[(1, 21039765), (3, 7013255), (5, 4207953), (15, 1402651), (41, 513165), (123, 171055), (205, 102633), (615, 34211)]