21294478

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{11923}}^1$

素因数の和:11991

約数の個数: 16

約数和(自身を含む): 34341120

約数和(自身を除く): 13046642

約数列:

[1, 2, 19, 38, 47, 94, 893, 1786, 11923, 23846, 226537, 453074, 560381, 1120762, 10647239, 21294478]

約数ペア:

[(1, 21294478), (2, 10647239), (19, 1120762), (38, 560381), (47, 453074), (94, 226537), (893, 23846), (1786, 11923)]