19937853

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1321}}^1$

素因数の和:1386

約数の個数: 32

約数和(自身を含む): 32574080

約数和(自身を除く): 12636227

約数列:

[1, 3, 9, 13, 27, 39, 43, 117, 129, 351, 387, 559, 1161, 1321, 1677, 3963, 5031, 11889, 15093, 17173, 35667, 51519, 56803, 154557, 170409, 463671, 511227, 738439, 1533681, 2215317, 6645951, 19937853]

約数ペア:

[(1, 19937853), (3, 6645951), (9, 2215317), (13, 1533681), (27, 738439), (39, 511227), (43, 463671), (117, 170409), (129, 154557), (351, 56803), (387, 51519), (559, 35667), (1161, 17173), (1321, 15093), (1677, 11889), (3963, 5031)]