20397738

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{457}}^1$

素因数の和:678

約数の個数: 32

約数和(自身を含む): 42077376

約数和(自身を除く): 21679638

約数列:

[1, 2, 3, 6, 43, 86, 129, 173, 258, 346, 457, 519, 914, 1038, 1371, 2742, 7439, 14878, 19651, 22317, 39302, 44634, 58953, 79061, 117906, 158122, 237183, 474366, 3399623, 6799246, 10198869, 20397738]

約数ペア:

[(1, 20397738), (2, 10198869), (3, 6799246), (6, 3399623), (43, 474366), (86, 237183), (129, 158122), (173, 117906), (258, 79061), (346, 58953), (457, 44634), (519, 39302), (914, 22317), (1038, 19651), (1371, 14878), (2742, 7439)]