21666267

素因数分解:

$3^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{1039}}^1$

素因数の和:1383

約数の個数: 24

約数和(自身を含む): 35909120

約数和(自身を除く): 14242853

約数列:

[1, 3, 7, 9, 21, 63, 331, 993, 1039, 2317, 2979, 3117, 6951, 7273, 9351, 20853, 21819, 65457, 343909, 1031727, 2407363, 3095181, 7222089, 21666267]

約数ペア:

[(1, 21666267), (3, 7222089), (7, 3095181), (9, 2407363), (21, 1031727), (63, 343909), (331, 65457), (993, 21819), (1039, 20853), (2317, 9351), (2979, 7273), (3117, 6951)]