21656159

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{1237}}^1$

素因数の和:1346

約数の個数: 16

約数和(自身を含む): 25790016

約数和(自身を除く): 4133857

約数列:

[1, 7, 41, 61, 287, 427, 1237, 2501, 8659, 17507, 50717, 75457, 355019, 528199, 3093737, 21656159]

約数ペア:

[(1, 21656159), (7, 3093737), (41, 528199), (61, 355019), (287, 75457), (427, 50717), (1237, 17507), (2501, 8659)]