39980031

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{20921}}^1$

素因数の和:20951

約数の個数: 24

約数和(自身を含む): 66783024

約数和(自身を除く): 26802993

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 20921, 62763, 146447, 271973, 439341, 815919, 1025129, 1903811, 3075387, 5711433, 13326677, 39980031]

約数ペア:

[(1, 39980031), (3, 13326677), (7, 5711433), (13, 3075387), (21, 1903811), (39, 1025129), (49, 815919), (91, 439341), (147, 271973), (273, 146447), (637, 62763), (1911, 20921)]