39991749

素因数分解:

$3^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{12781}}^1$

素因数の和:12940

約数の個数: 16

約数和(自身を含む): 61353600

約数和(自身を除く): 21361851

約数列:

[1, 3, 7, 21, 149, 447, 1043, 3129, 12781, 38343, 89467, 268401, 1904369, 5713107, 13330583, 39991749]

約数ペア:

[(1, 39991749), (3, 13330583), (7, 5713107), (21, 1904369), (149, 268401), (447, 89467), (1043, 38343), (3129, 12781)]