128271440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2053}}^1$

素因数の和:2148

約数の個数: 80

約数和(自身を含む): 330086016

約数和(自身を除く): 201814576

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 71, 80, 88, 110, 142, 176, 220, 284, 355, 440, 568, 710, 781, 880, 1136, 1420, 1562, 2053, 2840, 3124, 3905, 4106, 5680, 6248, 7810, 8212, 10265, 12496, 15620, 16424, 20530, 22583, 31240, 32848, 41060, 45166, 62480, 82120, 90332, 112915, 145763, 164240, 180664, 225830, 291526, 361328, 451660, 583052, 728815, 903320, 1166104, 1457630, 1603393, 1806640, 2332208, 2915260, 3206786, 5830520, 6413572, 8016965, 11661040, 12827144, 16033930, 25654288, 32067860, 64135720, 128271440]

約数ペア:

[(1, 128271440), (2, 64135720), (4, 32067860), (5, 25654288), (8, 16033930), (10, 12827144), (11, 11661040), (16, 8016965), (20, 6413572), (22, 5830520), (40, 3206786), (44, 2915260), (55, 2332208), (71, 1806640), (80, 1603393), (88, 1457630), (110, 1166104), (142, 903320), (176, 728815), (220, 583052), (284, 451660), (355, 361328), (440, 291526), (568, 225830), (710, 180664), (781, 164240), (880, 145763), (1136, 112915), (1420, 90332), (1562, 82120), (2053, 62480), (2840, 45166), (3124, 41060), (3905, 32848), (4106, 31240), (5680, 22583), (6248, 20530), (7810, 16424), (8212, 15620), (10265, 12496)]