19938584

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{389}}^1$

素因数の和:587

約数の個数: 32

約数和(自身を含む): 38610000

約数和(自身を除く): 18671416

約数列:

[1, 2, 4, 8, 43, 86, 149, 172, 298, 344, 389, 596, 778, 1192, 1556, 3112, 6407, 12814, 16727, 25628, 33454, 51256, 57961, 66908, 115922, 133816, 231844, 463688, 2492323, 4984646, 9969292, 19938584]

約数ペア:

[(1, 19938584), (2, 9969292), (4, 4984646), (8, 2492323), (43, 463688), (86, 231844), (149, 133816), (172, 115922), (298, 66908), (344, 57961), (389, 51256), (596, 33454), (778, 25628), (1192, 16727), (1556, 12814), (3112, 6407)]