81658990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{9803}}^1$

素因数の和:9841

約数の個数: 48

約数和(自身を含む): 181060272

約数和(自身を除く): 99401282

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 49, 70, 85, 98, 119, 170, 238, 245, 490, 595, 833, 1190, 1666, 4165, 8330, 9803, 19606, 49015, 68621, 98030, 137242, 166651, 333302, 343105, 480347, 686210, 833255, 960694, 1166557, 1666510, 2333114, 2401735, 4803470, 5832785, 8165899, 11665570, 16331798, 40829495, 81658990]

約数ペア:

[(1, 81658990), (2, 40829495), (5, 16331798), (7, 11665570), (10, 8165899), (14, 5832785), (17, 4803470), (34, 2401735), (35, 2333114), (49, 1666510), (70, 1166557), (85, 960694), (98, 833255), (119, 686210), (170, 480347), (238, 343105), (245, 333302), (490, 166651), (595, 137242), (833, 98030), (1190, 68621), (1666, 49015), (4165, 19606), (8330, 9803)]