2019345520

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{491}}^1\times {\mathrm{509}}^1$

素因数の和:1114

約数の個数: 80

約数和(自身を含む): 4760454240

約数和(自身を除く): 2741108720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 491, 505, 509, 808, 982, 1010, 1018, 1616, 1964, 2020, 2036, 2455, 2545, 3928, 4040, 4072, 4910, 5090, 7856, 8080, 8144, 9820, 10180, 19640, 20360, 39280, 40720, 49591, 51409, 99182, 102818, 198364, 205636, 247955, 249919, 257045, 396728, 411272, 495910, 499838, 514090, 793456, 822544, 991820, 999676, 1028180, 1249595, 1983640, 1999352, 2056360, 2499190, 3967280, 3998704, 4112720, 4998380, 9996760, 19993520, 25241819, 50483638, 100967276, 126209095, 201934552, 252418190, 403869104, 504836380, 1009672760, 2019345520]

約数ペア:

[(1, 2019345520), (2, 1009672760), (4, 504836380), (5, 403869104), (8, 252418190), (10, 201934552), (16, 126209095), (20, 100967276), (40, 50483638), (80, 25241819), (101, 19993520), (202, 9996760), (404, 4998380), (491, 4112720), (505, 3998704), (509, 3967280), (808, 2499190), (982, 2056360), (1010, 1999352), (1018, 1983640), (1616, 1249595), (1964, 1028180), (2020, 999676), (2036, 991820), (2455, 822544), (2545, 793456), (3928, 514090), (4040, 499838), (4072, 495910), (4910, 411272), (5090, 396728), (7856, 257045), (8080, 249919), (8144, 247955), (9820, 205636), (10180, 198364), (19640, 102818), (20360, 99182), (39280, 51409), (40720, 49591)]