21705656

素因数分解:

$2^3\times 7^1\times {\mathrm{331}}^1\times {\mathrm{1171}}^1$

素因数の和:1515

約数の個数: 32

約数和(自身を含む): 46692480

約数和(自身を除く): 24986824

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 331, 662, 1171, 1324, 2317, 2342, 2648, 4634, 4684, 8197, 9268, 9368, 16394, 18536, 32788, 65576, 387601, 775202, 1550404, 2713207, 3100808, 5426414, 10852828, 21705656]

約数ペア:

[(1, 21705656), (2, 10852828), (4, 5426414), (7, 3100808), (8, 2713207), (14, 1550404), (28, 775202), (56, 387601), (331, 65576), (662, 32788), (1171, 18536), (1324, 16394), (2317, 9368), (2342, 9268), (2648, 8197), (4634, 4684)]