21879208

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2663}}^1$

素因数の和:2761

約数の個数: 32

約数和(自身を含む): 44755200

約数和(自身を除く): 22875992

約数列:

[1, 2, 4, 8, 13, 26, 52, 79, 104, 158, 316, 632, 1027, 2054, 2663, 4108, 5326, 8216, 10652, 21304, 34619, 69238, 138476, 210377, 276952, 420754, 841508, 1683016, 2734901, 5469802, 10939604, 21879208]

約数ペア:

[(1, 21879208), (2, 10939604), (4, 5469802), (8, 2734901), (13, 1683016), (26, 841508), (52, 420754), (79, 276952), (104, 210377), (158, 138476), (316, 69238), (632, 34619), (1027, 21304), (2054, 10652), (2663, 8216), (4108, 5326)]