21399633

素因数分解:

$3^4\times {\mathrm{349}}^1\times {\mathrm{757}}^1$

素因数の和:1118

約数の個数: 20

約数和(自身を含む): 32101300

約数和(自身を除く): 10701667

約数列:

[1, 3, 9, 27, 81, 349, 757, 1047, 2271, 3141, 6813, 9423, 20439, 28269, 61317, 264193, 792579, 2377737, 7133211, 21399633]

約数ペア:

[(1, 21399633), (3, 7133211), (9, 2377737), (27, 792579), (81, 264193), (349, 61317), (757, 28269), (1047, 20439), (2271, 9423), (3141, 6813)]