21107235

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19819}}^1$

素因数の和:19898

約数の個数: 16

約数和(自身を含む): 34248960

約数和(自身を除く): 13141725

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19819, 59457, 99095, 297285, 1407149, 4221447, 7035745, 21107235]

約数ペア:

[(1, 21107235), (3, 7035745), (5, 4221447), (15, 1407149), (71, 297285), (213, 99095), (355, 59457), (1065, 19819)]