31080987

素因数分解:

$3^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{1607}}^1$

素因数の和:1927

約数の個数: 24

約数和(自身を含む): 51507456

約数和(自身を除く): 20426469

約数列:

[1, 3, 7, 9, 21, 63, 307, 921, 1607, 2149, 2763, 4821, 6447, 11249, 14463, 19341, 33747, 101241, 493349, 1480047, 3453443, 4440141, 10360329, 31080987]

約数ペア:

[(1, 31080987), (3, 10360329), (7, 4440141), (9, 3453443), (21, 1480047), (63, 493349), (307, 101241), (921, 33747), (1607, 19341), (2149, 14463), (2763, 11249), (4821, 6447)]