2019019990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{19937}}^1$

素因数の和:20017

約数の個数: 64

約数和(自身を含む): 4220475840

約数和(自身を除く): 2201455850

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 41, 65, 82, 95, 130, 190, 205, 247, 410, 494, 533, 779, 1066, 1235, 1558, 2470, 2665, 3895, 5330, 7790, 10127, 19937, 20254, 39874, 50635, 99685, 101270, 199370, 259181, 378803, 518362, 757606, 817417, 1295905, 1634834, 1894015, 2591810, 3788030, 4087085, 4924439, 8174170, 9848878, 10626421, 15530923, 21252842, 24622195, 31061846, 49244390, 53132105, 77654615, 106264210, 155309230, 201901999, 403803998, 1009509995, 2019019990]

約数ペア:

[(1, 2019019990), (2, 1009509995), (5, 403803998), (10, 201901999), (13, 155309230), (19, 106264210), (26, 77654615), (38, 53132105), (41, 49244390), (65, 31061846), (82, 24622195), (95, 21252842), (130, 15530923), (190, 10626421), (205, 9848878), (247, 8174170), (410, 4924439), (494, 4087085), (533, 3788030), (779, 2591810), (1066, 1894015), (1235, 1634834), (1558, 1295905), (2470, 817417), (2665, 757606), (3895, 518362), (5330, 378803), (7790, 259181), (10127, 199370), (19937, 101270), (20254, 99685), (39874, 50635)]