1620231680

素因数分解:

$2^9\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1627}}^1$

素因数の和:2039

約数の個数: 80

約数和(自身を含む): 3897138960

約数和(自身を除く): 2276907280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 389, 512, 640, 778, 1280, 1556, 1627, 1945, 2560, 3112, 3254, 3890, 6224, 6508, 7780, 8135, 12448, 13016, 15560, 16270, 24896, 26032, 31120, 32540, 49792, 52064, 62240, 65080, 99584, 104128, 124480, 130160, 199168, 208256, 248960, 260320, 416512, 497920, 520640, 632903, 833024, 995840, 1041280, 1265806, 2082560, 2531612, 3164515, 4165120, 5063224, 6329030, 10126448, 12658060, 20252896, 25316120, 40505792, 50632240, 81011584, 101264480, 162023168, 202528960, 324046336, 405057920, 810115840, 1620231680]

約数ペア:

[(1, 1620231680), (2, 810115840), (4, 405057920), (5, 324046336), (8, 202528960), (10, 162023168), (16, 101264480), (20, 81011584), (32, 50632240), (40, 40505792), (64, 25316120), (80, 20252896), (128, 12658060), (160, 10126448), (256, 6329030), (320, 5063224), (389, 4165120), (512, 3164515), (640, 2531612), (778, 2082560), (1280, 1265806), (1556, 1041280), (1627, 995840), (1945, 833024), (2560, 632903), (3112, 520640), (3254, 497920), (3890, 416512), (6224, 260320), (6508, 248960), (7780, 208256), (8135, 199168), (12448, 130160), (13016, 124480), (15560, 104128), (16270, 99584), (24896, 65080), (26032, 62240), (31120, 52064), (32540, 49792)]