21481600

素因数分解:

$2^7\times 5^2\times 7^2\times {\mathrm{137}}^1$

素因数の和:175

約数の個数: 144

約数和(自身を含む): 62180730

約数和(自身を除く): 40699130

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 64, 70, 80, 98, 100, 112, 128, 137, 140, 160, 175, 196, 200, 224, 245, 274, 280, 320, 350, 392, 400, 448, 490, 548, 560, 640, 685, 700, 784, 800, 896, 959, 980, 1096, 1120, 1225, 1370, 1400, 1568, 1600, 1918, 1960, 2192, 2240, 2450, 2740, 2800, 3136, 3200, 3425, 3836, 3920, 4384, 4480, 4795, 4900, 5480, 5600, 6272, 6713, 6850, 7672, 7840, 8768, 9590, 9800, 10960, 11200, 13426, 13700, 15344, 15680, 17536, 19180, 19600, 21920, 22400, 23975, 26852, 27400, 30688, 31360, 33565, 38360, 39200, 43840, 47950, 53704, 54800, 61376, 67130, 76720, 78400, 87680, 95900, 107408, 109600, 122752, 134260, 153440, 156800, 167825, 191800, 214816, 219200, 268520, 306880, 335650, 383600, 429632, 438400, 537040, 613760, 671300, 767200, 859264, 1074080, 1342600, 1534400, 2148160, 2685200, 3068800, 4296320, 5370400, 10740800, 21481600]

約数ペア:

[(1, 21481600), (2, 10740800), (4, 5370400), (5, 4296320), (7, 3068800), (8, 2685200), (10, 2148160), (14, 1534400), (16, 1342600), (20, 1074080), (25, 859264), (28, 767200), (32, 671300), (35, 613760), (40, 537040), (49, 438400), (50, 429632), (56, 383600), (64, 335650), (70, 306880), (80, 268520), (98, 219200), (100, 214816), (112, 191800), (128, 167825), (137, 156800), (140, 153440), (160, 134260), (175, 122752), (196, 109600), (200, 107408), (224, 95900), (245, 87680), (274, 78400), (280, 76720), (320, 67130), (350, 61376), (392, 54800), (400, 53704), (448, 47950), (490, 43840), (548, 39200), (560, 38360), (640, 33565), (685, 31360), (700, 30688), (784, 27400), (800, 26852), (896, 23975), (959, 22400), (980, 21920), (1096, 19600), (1120, 19180), (1225, 17536), (1370, 15680), (1400, 15344), (1568, 13700), (1600, 13426), (1918, 11200), (1960, 10960), (2192, 9800), (2240, 9590), (2450, 8768), (2740, 7840), (2800, 7672), (3136, 6850), (3200, 6713), (3425, 6272), (3836, 5600), (3920, 5480), (4384, 4900), (4480, 4795)]