21008895

素因数分解:

$3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{15737}}^1$

素因数の和:15834

約数の個数: 16

約数和(自身を含む): 33994080

約数和(自身を除く): 12985185

約数列:

[1, 3, 5, 15, 89, 267, 445, 1335, 15737, 47211, 78685, 236055, 1400593, 4201779, 7002965, 21008895]

約数ペア:

[(1, 21008895), (3, 7002965), (5, 4201779), (15, 1400593), (89, 236055), (267, 78685), (445, 47211), (1335, 15737)]