21006555

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{34157}}^1$

素因数の和:34206

約数の個数: 16

約数和(自身を含む): 34431264

約数和(自身を除く): 13424709

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 34157, 102471, 170785, 512355, 1400437, 4201311, 7002185, 21006555]

約数ペア:

[(1, 21006555), (3, 7002185), (5, 4201311), (15, 1400437), (41, 512355), (123, 170785), (205, 102471), (615, 34157)]