321005200

素因数分解:

$2^4\times 5^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:305

約数の個数: 120

約数和(自身を含む): 797091840

約数和(自身を除く): 476086640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 71, 80, 89, 100, 127, 142, 178, 200, 254, 284, 355, 356, 400, 445, 508, 568, 635, 710, 712, 890, 1016, 1136, 1270, 1420, 1424, 1775, 1780, 2032, 2225, 2540, 2840, 3175, 3550, 3560, 4450, 5080, 5680, 6319, 6350, 7100, 7120, 8900, 9017, 10160, 11303, 12638, 12700, 14200, 17800, 18034, 22606, 25276, 25400, 28400, 31595, 35600, 36068, 45085, 45212, 50552, 50800, 56515, 63190, 72136, 90170, 90424, 101104, 113030, 126380, 144272, 157975, 180340, 180848, 225425, 226060, 252760, 282575, 315950, 360680, 450850, 452120, 505520, 565150, 631900, 721360, 802513, 901700, 904240, 1130300, 1263800, 1605026, 1803400, 2260600, 2527600, 3210052, 3606800, 4012565, 4521200, 6420104, 8025130, 12840208, 16050260, 20062825, 32100520, 40125650, 64201040, 80251300, 160502600, 321005200]

約数ペア:

[(1, 321005200), (2, 160502600), (4, 80251300), (5, 64201040), (8, 40125650), (10, 32100520), (16, 20062825), (20, 16050260), (25, 12840208), (40, 8025130), (50, 6420104), (71, 4521200), (80, 4012565), (89, 3606800), (100, 3210052), (127, 2527600), (142, 2260600), (178, 1803400), (200, 1605026), (254, 1263800), (284, 1130300), (355, 904240), (356, 901700), (400, 802513), (445, 721360), (508, 631900), (568, 565150), (635, 505520), (710, 452120), (712, 450850), (890, 360680), (1016, 315950), (1136, 282575), (1270, 252760), (1420, 226060), (1424, 225425), (1775, 180848), (1780, 180340), (2032, 157975), (2225, 144272), (2540, 126380), (2840, 113030), (3175, 101104), (3550, 90424), (3560, 90170), (4450, 72136), (5080, 63190), (5680, 56515), (6319, 50800), (6350, 50552), (7100, 45212), (7120, 45085), (8900, 36068), (9017, 35600), (10160, 31595), (11303, 28400), (12638, 25400), (12700, 25276), (14200, 22606), (17800, 18034)]