21275421

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{2939}}^1$

素因数の和:3088

約数の個数: 16

約数和(自身を含む): 30105600

約数和(自身を除く): 8830179

約数列:

[1, 3, 19, 57, 127, 381, 2413, 2939, 7239, 8817, 55841, 167523, 373253, 1119759, 7091807, 21275421]

約数ペア:

[(1, 21275421), (3, 7091807), (19, 1119759), (57, 373253), (127, 167523), (381, 55841), (2413, 8817), (2939, 7239)]