78721906

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{457}}^1\times {\mathrm{2003}}^1$

素因数の和:2505

約数の個数: 16

約数和(自身を含む): 121153824

約数和(自身を除く): 42431918

約数列:

[1, 2, 43, 86, 457, 914, 2003, 4006, 19651, 39302, 86129, 172258, 915371, 1830742, 39360953, 78721906]

約数ペア:

[(1, 78721906), (2, 39360953), (43, 1830742), (86, 915371), (457, 172258), (914, 86129), (2003, 39302), (4006, 19651)]