21838568

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{479}}^1$

素因数の和:665

約数の個数: 32

約数和(自身を含む): 42336000

約数和(自身を除く): 20497432

約数列:

[1, 2, 4, 8, 41, 82, 139, 164, 278, 328, 479, 556, 958, 1112, 1916, 3832, 5699, 11398, 19639, 22796, 39278, 45592, 66581, 78556, 133162, 157112, 266324, 532648, 2729821, 5459642, 10919284, 21838568]

約数ペア:

[(1, 21838568), (2, 10919284), (4, 5459642), (8, 2729821), (41, 532648), (82, 266324), (139, 157112), (164, 133162), (278, 78556), (328, 66581), (479, 45592), (556, 39278), (958, 22796), (1112, 19639), (1916, 11398), (3832, 5699)]