20196313520

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{32621}}^1$

素因数の和:32814

約数の個数: 80

約数和(自身を含む): 48056120640

約数和(自身を除く): 27859807120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 109, 142, 218, 284, 355, 436, 545, 568, 710, 872, 1090, 1136, 1420, 1744, 2180, 2840, 4360, 5680, 7739, 8720, 15478, 30956, 32621, 38695, 61912, 65242, 77390, 123824, 130484, 154780, 163105, 260968, 309560, 326210, 521936, 619120, 652420, 1304840, 2316091, 2609680, 3555689, 4632182, 7111378, 9264364, 11580455, 14222756, 17778445, 18528728, 23160910, 28445512, 35556890, 37057456, 46321820, 56891024, 71113780, 92643640, 142227560, 185287280, 252453919, 284455120, 504907838, 1009815676, 1262269595, 2019631352, 2524539190, 4039262704, 5049078380, 10098156760, 20196313520]

約数ペア:

[(1, 20196313520), (2, 10098156760), (4, 5049078380), (5, 4039262704), (8, 2524539190), (10, 2019631352), (16, 1262269595), (20, 1009815676), (40, 504907838), (71, 284455120), (80, 252453919), (109, 185287280), (142, 142227560), (218, 92643640), (284, 71113780), (355, 56891024), (436, 46321820), (545, 37057456), (568, 35556890), (710, 28445512), (872, 23160910), (1090, 18528728), (1136, 17778445), (1420, 14222756), (1744, 11580455), (2180, 9264364), (2840, 7111378), (4360, 4632182), (5680, 3555689), (7739, 2609680), (8720, 2316091), (15478, 1304840), (30956, 652420), (32621, 619120), (38695, 521936), (61912, 326210), (65242, 309560), (77390, 260968), (123824, 163105), (130484, 154780)]