18928581

素因数分解:

$3^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{2141}}^1$

素因数の和:2572

約数の個数: 16

約数和(自身を含む): 28925568

約数和(自身を除く): 9996987

約数列:

[1, 3, 7, 21, 421, 1263, 2141, 2947, 6423, 8841, 14987, 44961, 901361, 2704083, 6309527, 18928581]

約数ペア:

[(1, 18928581), (3, 6309527), (7, 2704083), (21, 901361), (421, 44961), (1263, 14987), (2141, 8841), (2947, 6423)]