21720474

素因数分解:

$2^1\times 3^4\times {\mathrm{134077}}^1$

素因数の和:134091

約数の個数: 20

約数和(自身を含む): 48670314

約数和(自身を除く): 26949840

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 134077, 268154, 402231, 804462, 1206693, 2413386, 3620079, 7240158, 10860237, 21720474]

約数ペア:

[(1, 21720474), (2, 10860237), (3, 7240158), (6, 3620079), (9, 2413386), (18, 1206693), (27, 804462), (54, 402231), (81, 268154), (162, 134077)]