21700920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{193}}^1\times {\mathrm{937}}^1$

素因数の和:1144

約数の個数: 64

約数和(自身を含む): 65509920

約数和(自身を除く): 43809000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 193, 386, 579, 772, 937, 965, 1158, 1544, 1874, 1930, 2316, 2811, 2895, 3748, 3860, 4632, 4685, 5622, 5790, 7496, 7720, 9370, 11244, 11580, 14055, 18740, 22488, 23160, 28110, 37480, 56220, 112440, 180841, 361682, 542523, 723364, 904205, 1085046, 1446728, 1808410, 2170092, 2712615, 3616820, 4340184, 5425230, 7233640, 10850460, 21700920]

約数ペア:

[(1, 21700920), (2, 10850460), (3, 7233640), (4, 5425230), (5, 4340184), (6, 3616820), (8, 2712615), (10, 2170092), (12, 1808410), (15, 1446728), (20, 1085046), (24, 904205), (30, 723364), (40, 542523), (60, 361682), (120, 180841), (193, 112440), (386, 56220), (579, 37480), (772, 28110), (937, 23160), (965, 22488), (1158, 18740), (1544, 14055), (1874, 11580), (1930, 11244), (2316, 9370), (2811, 7720), (2895, 7496), (3748, 5790), (3860, 5622), (4632, 4685)]