19915454

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{24709}}^1$

素因数の和:24755

約数の個数: 16

約数和(自身を含む): 33210240

約数和(自身を除く): 13294786

約数列:

[1, 2, 13, 26, 31, 62, 403, 806, 24709, 49418, 321217, 642434, 765979, 1531958, 9957727, 19915454]

約数ペア:

[(1, 19915454), (2, 9957727), (13, 1531958), (26, 765979), (31, 642434), (62, 321217), (403, 49418), (806, 24709)]