19001872

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:511

約数の個数: 40

約数和(自身を含む): 38301120

約数和(自身を除く): 19299248

約数列:

[1, 2, 4, 8, 16, 43, 71, 86, 142, 172, 284, 344, 389, 568, 688, 778, 1136, 1556, 3053, 3112, 6106, 6224, 12212, 16727, 24424, 27619, 33454, 48848, 55238, 66908, 110476, 133816, 220952, 267632, 441904, 1187617, 2375234, 4750468, 9500936, 19001872]

約数ペア:

[(1, 19001872), (2, 9500936), (4, 4750468), (8, 2375234), (16, 1187617), (43, 441904), (71, 267632), (86, 220952), (142, 133816), (172, 110476), (284, 66908), (344, 55238), (389, 48848), (568, 33454), (688, 27619), (778, 24424), (1136, 16727), (1556, 12212), (3053, 6224), (3112, 6106)]