19812976

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{163}}^1$

素因数の和:349

約数の個数: 40

約数和(自身を含む): 39533184

約数和(自身を除く): 19720208

約数列:

[1, 2, 4, 8, 16, 71, 107, 142, 163, 214, 284, 326, 428, 568, 652, 856, 1136, 1304, 1712, 2608, 7597, 11573, 15194, 17441, 23146, 30388, 34882, 46292, 60776, 69764, 92584, 121552, 139528, 185168, 279056, 1238311, 2476622, 4953244, 9906488, 19812976]

約数ペア:

[(1, 19812976), (2, 9906488), (4, 4953244), (8, 2476622), (16, 1238311), (71, 279056), (107, 185168), (142, 139528), (163, 121552), (214, 92584), (284, 69764), (326, 60776), (428, 46292), (568, 34882), (652, 30388), (856, 23146), (1136, 17441), (1304, 15194), (1712, 11573), (2608, 7597)]