21813939

素因数分解:

$3^2\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1913}}^1$

素因数の和:2107

約数の個数: 24

約数和(自身を含む): 36228192

約数和(自身を除く): 14414253

約数列:

[1, 3, 7, 9, 21, 63, 181, 543, 1267, 1629, 1913, 3801, 5739, 11403, 13391, 17217, 40173, 120519, 346253, 1038759, 2423771, 3116277, 7271313, 21813939]

約数ペア:

[(1, 21813939), (3, 7271313), (7, 3116277), (9, 2423771), (21, 1038759), (63, 346253), (181, 120519), (543, 40173), (1267, 17217), (1629, 13391), (1913, 11403), (3801, 5739)]