19755980

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21017}}^1$

素因数の和:21073

約数の個数: 24

約数和(自身を含む): 42372288

約数和(自身を除く): 22616308

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21017, 42034, 84068, 105085, 210170, 420340, 987799, 1975598, 3951196, 4938995, 9877990, 19755980]

約数ペア:

[(1, 19755980), (2, 9877990), (4, 4938995), (5, 3951196), (10, 1975598), (20, 987799), (47, 420340), (94, 210170), (188, 105085), (235, 84068), (470, 42034), (940, 21017)]