19901080

素因数分解:

$2^3\times 5^1\times {\mathrm{593}}^1\times {\mathrm{839}}^1$

素因数の和:1443

約数の個数: 32

約数和(自身を含む): 44906400

約数和(自身を除く): 25005320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 593, 839, 1186, 1678, 2372, 2965, 3356, 4195, 4744, 5930, 6712, 8390, 11860, 16780, 23720, 33560, 497527, 995054, 1990108, 2487635, 3980216, 4975270, 9950540, 19901080]

約数ペア:

[(1, 19901080), (2, 9950540), (4, 4975270), (5, 3980216), (8, 2487635), (10, 1990108), (20, 995054), (40, 497527), (593, 33560), (839, 23720), (1186, 16780), (1678, 11860), (2372, 8390), (2965, 6712), (3356, 5930), (4195, 4744)]