81213916

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{43291}}^1$

素因数の和:43369

約数の個数: 24

約数和(自身を含む): 164855936

約数和(自身を除く): 83642020

約数列:

[1, 2, 4, 7, 14, 28, 67, 134, 268, 469, 938, 1876, 43291, 86582, 173164, 303037, 606074, 1212148, 2900497, 5800994, 11601988, 20303479, 40606958, 81213916]

約数ペア:

[(1, 81213916), (2, 40606958), (4, 20303479), (7, 11601988), (14, 5800994), (28, 2900497), (67, 1212148), (134, 606074), (268, 303037), (469, 173164), (938, 86582), (1876, 43291)]