21490280474

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1663}}^1\times {\mathrm{16033}}^1$

素因数の和:17742

約数の個数: 32

約数和(自身を含む): 35858694144

約数和(自身を除く): 14368413670

約数列:

[1, 2, 13, 26, 31, 62, 403, 806, 1663, 3326, 16033, 21619, 32066, 43238, 51553, 103106, 208429, 416858, 497023, 670189, 994046, 1340378, 6461299, 12922598, 26662879, 53325758, 346617427, 693234854, 826549249, 1653098498, 10745140237, 21490280474]

約数ペア:

[(1, 21490280474), (2, 10745140237), (13, 1653098498), (26, 826549249), (31, 693234854), (62, 346617427), (403, 53325758), (806, 26662879), (1663, 12922598), (3326, 6461299), (16033, 1340378), (21619, 994046), (32066, 670189), (43238, 497023), (51553, 416858), (103106, 208429)]