28528857

素因数分解:

$3^2\times 7^1\times {\mathrm{241}}^1\times {\mathrm{1879}}^1$

素因数の和:2133

約数の個数: 24

約数和(自身を含む): 47315840

約数和(自身を除く): 18786983

約数列:

[1, 3, 7, 9, 21, 63, 241, 723, 1687, 1879, 2169, 5061, 5637, 13153, 15183, 16911, 39459, 118377, 452839, 1358517, 3169873, 4075551, 9509619, 28528857]

約数ペア:

[(1, 28528857), (3, 9509619), (7, 4075551), (9, 3169873), (21, 1358517), (63, 452839), (241, 118377), (723, 39459), (1687, 16911), (1879, 15183), (2169, 13153), (5061, 5637)]