21871839

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{677}}^1$

素因数の和:791

約数の個数: 24

約数和(自身を含む): 32462640

約数和(自身を除く): 10590801

約数列:

[1, 3, 11, 33, 89, 121, 267, 363, 677, 979, 2031, 2937, 7447, 10769, 22341, 32307, 60253, 81917, 180759, 245751, 662783, 1988349, 7290613, 21871839]

約数ペア:

[(1, 21871839), (3, 7290613), (11, 1988349), (33, 662783), (89, 245751), (121, 180759), (267, 81917), (363, 60253), (677, 32307), (979, 22341), (2031, 10769), (2937, 7447)]