16720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1$

素因数の和:43

約数の個数: 40

約数和(自身を含む): 44640

約数和(自身を除く): 27920

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 176, 190, 209, 220, 304, 380, 418, 440, 760, 836, 880, 1045, 1520, 1672, 2090, 3344, 4180, 8360, 16720]

約数ペア:

[(1, 16720), (2, 8360), (4, 4180), (5, 3344), (8, 2090), (10, 1672), (11, 1520), (16, 1045), (19, 880), (20, 836), (22, 760), (38, 440), (40, 418), (44, 380), (55, 304), (76, 220), (80, 209), (88, 190), (95, 176), (110, 152)]