18865605

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2659}}^1$

素因数の和:2721

約数の個数: 32

約数和(自身を含む): 33707520

約数和(自身を除く): 14841915

約数列:

[1, 3, 5, 11, 15, 33, 43, 55, 129, 165, 215, 473, 645, 1419, 2365, 2659, 7095, 7977, 13295, 29249, 39885, 87747, 114337, 146245, 343011, 438735, 571685, 1257707, 1715055, 3773121, 6288535, 18865605]

約数ペア:

[(1, 18865605), (3, 6288535), (5, 3773121), (11, 1715055), (15, 1257707), (33, 571685), (43, 438735), (55, 343011), (129, 146245), (165, 114337), (215, 87747), (473, 39885), (645, 29249), (1419, 13295), (2365, 7977), (2659, 7095)]