16721360

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1061}}^1$

素因数の和:1271

約数の個数: 40

約数和(自身を含む): 39111336

約数和(自身を除く): 22389976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1061, 1576, 1970, 2122, 3152, 3940, 4244, 5305, 7880, 8488, 10610, 15760, 16976, 21220, 42440, 84880, 209017, 418034, 836068, 1045085, 1672136, 2090170, 3344272, 4180340, 8360680, 16721360]

約数ペア:

[(1, 16721360), (2, 8360680), (4, 4180340), (5, 3344272), (8, 2090170), (10, 1672136), (16, 1045085), (20, 836068), (40, 418034), (80, 209017), (197, 84880), (394, 42440), (788, 21220), (985, 16976), (1061, 15760), (1576, 10610), (1970, 8488), (2122, 7880), (3152, 5305), (3940, 4244)]