81997629

素因数分解:

$3^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{4013}}^1$

素因数の和:4169

約数の個数: 24

約数和(自身を含む): 128126880

約数和(自身を除く): 46129251

約数列:

[1, 3, 7, 21, 49, 139, 147, 417, 973, 2919, 4013, 6811, 12039, 20433, 28091, 84273, 196637, 557807, 589911, 1673421, 3904649, 11713947, 27332543, 81997629]

約数ペア:

[(1, 81997629), (3, 27332543), (7, 11713947), (21, 3904649), (49, 1673421), (139, 589911), (147, 557807), (417, 196637), (973, 84273), (2919, 28091), (4013, 20433), (6811, 12039)]