8021840

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{509}}^1$

素因数の和:719

約数の個数: 40

約数和(自身を含む): 18782280

約数和(自身を除く): 10760440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 509, 788, 985, 1018, 1576, 1970, 2036, 2545, 3152, 3940, 4072, 5090, 7880, 8144, 10180, 15760, 20360, 40720, 100273, 200546, 401092, 501365, 802184, 1002730, 1604368, 2005460, 4010920, 8021840]

約数ペア:

[(1, 8021840), (2, 4010920), (4, 2005460), (5, 1604368), (8, 1002730), (10, 802184), (16, 501365), (20, 401092), (40, 200546), (80, 100273), (197, 40720), (394, 20360), (509, 15760), (788, 10180), (985, 8144), (1018, 7880), (1576, 5090), (1970, 4072), (2036, 3940), (2545, 3152)]