20176191

素因数分解:

$3^2\times 7^2\times {\mathrm{45751}}^1$

素因数の和:45771

約数の個数: 18

約数和(自身を含む): 33902232

約数和(自身を除く): 13726041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45751, 137253, 320257, 411759, 960771, 2241799, 2882313, 6725397, 20176191]

約数ペア:

[(1, 20176191), (3, 6725397), (7, 2882313), (9, 2241799), (21, 960771), (49, 411759), (63, 320257), (147, 137253), (441, 45751)]