21254403

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{2797}}^1$

素因数の和:2966

約数の個数: 16

約数和(自身を含む): 30218400

約数和(自身を除く): 8963997

約数列:

[1, 3, 17, 51, 149, 447, 2533, 2797, 7599, 8391, 47549, 142647, 416753, 1250259, 7084801, 21254403]

約数ペア:

[(1, 21254403), (3, 7084801), (17, 1250259), (51, 416753), (149, 142647), (447, 47549), (2533, 8391), (2797, 7599)]