12745719

素因数分解:

$3^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{659}}^1$

素因数の和:979

約数の個数: 24

約数和(自身を含む): 21141120

約数和(自身を除く): 8395401

約数列:

[1, 3, 7, 9, 21, 63, 307, 659, 921, 1977, 2149, 2763, 4613, 5931, 6447, 13839, 19341, 41517, 202313, 606939, 1416191, 1820817, 4248573, 12745719]

約数ペア:

[(1, 12745719), (3, 4248573), (7, 1820817), (9, 1416191), (21, 606939), (63, 202313), (307, 41517), (659, 19341), (921, 13839), (1977, 6447), (2149, 5931), (2763, 4613)]