19147280

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3371}}^1$

素因数の和:3455

約数の個数: 40

約数和(自身を含む): 45157824

約数和(自身を除く): 26010544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3371, 5680, 6742, 13484, 16855, 26968, 33710, 53936, 67420, 134840, 239341, 269680, 478682, 957364, 1196705, 1914728, 2393410, 3829456, 4786820, 9573640, 19147280]

約数ペア:

[(1, 19147280), (2, 9573640), (4, 4786820), (5, 3829456), (8, 2393410), (10, 1914728), (16, 1196705), (20, 957364), (40, 478682), (71, 269680), (80, 239341), (142, 134840), (284, 67420), (355, 53936), (568, 33710), (710, 26968), (1136, 16855), (1420, 13484), (2840, 6742), (3371, 5680)]