19723904

素因数分解:

$2^7\times {\mathrm{223}}^1\times {\mathrm{691}}^1$

素因数の和:928

約数の個数: 32

約数和(自身を含む): 39527040

約数和(自身を除く): 19803136

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 223, 446, 691, 892, 1382, 1784, 2764, 3568, 5528, 7136, 11056, 14272, 22112, 28544, 44224, 88448, 154093, 308186, 616372, 1232744, 2465488, 4930976, 9861952, 19723904]

約数ペア:

[(1, 19723904), (2, 9861952), (4, 4930976), (8, 2465488), (16, 1232744), (32, 616372), (64, 308186), (128, 154093), (223, 88448), (446, 44224), (691, 28544), (892, 22112), (1382, 14272), (1784, 11056), (2764, 7136), (3568, 5528)]