21539756

素因数分解:

$2^2\times 7^1\times {\mathrm{821}}^1\times {\mathrm{937}}^1$

素因数の和:1769

約数の個数: 24

約数和(自身を含む): 43178016

約数和(自身を除く): 21638260

約数列:

[1, 2, 4, 7, 14, 28, 821, 937, 1642, 1874, 3284, 3748, 5747, 6559, 11494, 13118, 22988, 26236, 769277, 1538554, 3077108, 5384939, 10769878, 21539756]

約数ペア:

[(1, 21539756), (2, 10769878), (4, 5384939), (7, 3077108), (14, 1538554), (28, 769277), (821, 26236), (937, 22988), (1642, 13118), (1874, 11494), (3284, 6559), (3748, 5747)]