15966220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19471}}^1$

素因数の和:19521

約数の個数: 24

約数和(自身を含む): 34348608

約数和(自身を除く): 18382388

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 19471, 38942, 77884, 97355, 194710, 389420, 798311, 1596622, 3193244, 3991555, 7983110, 15966220]

約数ペア:

[(1, 15966220), (2, 7983110), (4, 3991555), (5, 3193244), (10, 1596622), (20, 798311), (41, 389420), (82, 194710), (164, 97355), (205, 77884), (410, 38942), (820, 19471)]