19671393

素因数分解:

$3^1\times 7^4\times {\mathrm{2731}}^1$

素因数の和:2762

約数の個数: 20

約数和(自身を含む): 30609328

約数和(自身を除く): 10937935

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 2731, 7203, 8193, 19117, 57351, 133819, 401457, 936733, 2810199, 6557131, 19671393]

約数ペア:

[(1, 19671393), (3, 6557131), (7, 2810199), (21, 936733), (49, 401457), (147, 133819), (343, 57351), (1029, 19117), (2401, 8193), (2731, 7203)]