21945120

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{349}}^1$

素因数の和:498

約数の個数: 96

約数和(自身を含む): 69854400

約数和(自身を除く): 47909280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 131, 160, 240, 262, 349, 393, 480, 524, 655, 698, 786, 1047, 1048, 1310, 1396, 1572, 1745, 1965, 2094, 2096, 2620, 2792, 3144, 3490, 3930, 4188, 4192, 5235, 5240, 5584, 6288, 6980, 7860, 8376, 10470, 10480, 11168, 12576, 13960, 15720, 16752, 20940, 20960, 27920, 31440, 33504, 41880, 45719, 55840, 62880, 83760, 91438, 137157, 167520, 182876, 228595, 274314, 365752, 457190, 548628, 685785, 731504, 914380, 1097256, 1371570, 1463008, 1828760, 2194512, 2743140, 3657520, 4389024, 5486280, 7315040, 10972560, 21945120]

約数ペア:

[(1, 21945120), (2, 10972560), (3, 7315040), (4, 5486280), (5, 4389024), (6, 3657520), (8, 2743140), (10, 2194512), (12, 1828760), (15, 1463008), (16, 1371570), (20, 1097256), (24, 914380), (30, 731504), (32, 685785), (40, 548628), (48, 457190), (60, 365752), (80, 274314), (96, 228595), (120, 182876), (131, 167520), (160, 137157), (240, 91438), (262, 83760), (349, 62880), (393, 55840), (480, 45719), (524, 41880), (655, 33504), (698, 31440), (786, 27920), (1047, 20960), (1048, 20940), (1310, 16752), (1396, 15720), (1572, 13960), (1745, 12576), (1965, 11168), (2094, 10480), (2096, 10470), (2620, 8376), (2792, 7860), (3144, 6980), (3490, 6288), (3930, 5584), (4188, 5240), (4192, 5235)]