21697256

素因数分解:

$2^3\times 7^1\times {\mathrm{163}}^1\times {\mathrm{2377}}^1$

素因数の和:2553

約数の個数: 32

約数和(自身を含む): 46799040

約数和(自身を除く): 25101784

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 163, 326, 652, 1141, 1304, 2282, 2377, 4564, 4754, 9128, 9508, 16639, 19016, 33278, 66556, 133112, 387451, 774902, 1549804, 2712157, 3099608, 5424314, 10848628, 21697256]

約数ペア:

[(1, 21697256), (2, 10848628), (4, 5424314), (7, 3099608), (8, 2712157), (14, 1549804), (28, 774902), (56, 387451), (163, 133112), (326, 66556), (652, 33278), (1141, 19016), (1304, 16639), (2282, 9508), (2377, 9128), (4564, 4754)]