20463800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:381

約数の個数: 96

約数和(自身を含む): 55710720

約数和(自身を除く): 35246920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 47, 50, 56, 70, 94, 100, 140, 175, 188, 200, 235, 280, 311, 329, 350, 376, 470, 622, 658, 700, 940, 1175, 1244, 1316, 1400, 1555, 1645, 1880, 2177, 2350, 2488, 2632, 3110, 3290, 4354, 4700, 6220, 6580, 7775, 8225, 8708, 9400, 10885, 12440, 13160, 14617, 15550, 16450, 17416, 21770, 29234, 31100, 32900, 43540, 54425, 58468, 62200, 65800, 73085, 87080, 102319, 108850, 116936, 146170, 204638, 217700, 292340, 365425, 409276, 435400, 511595, 584680, 730850, 818552, 1023190, 1461700, 2046380, 2557975, 2923400, 4092760, 5115950, 10231900, 20463800]

約数ペア:

[(1, 20463800), (2, 10231900), (4, 5115950), (5, 4092760), (7, 2923400), (8, 2557975), (10, 2046380), (14, 1461700), (20, 1023190), (25, 818552), (28, 730850), (35, 584680), (40, 511595), (47, 435400), (50, 409276), (56, 365425), (70, 292340), (94, 217700), (100, 204638), (140, 146170), (175, 116936), (188, 108850), (200, 102319), (235, 87080), (280, 73085), (311, 65800), (329, 62200), (350, 58468), (376, 54425), (470, 43540), (622, 32900), (658, 31100), (700, 29234), (940, 21770), (1175, 17416), (1244, 16450), (1316, 15550), (1400, 14617), (1555, 13160), (1645, 12440), (1880, 10885), (2177, 9400), (2350, 8708), (2488, 8225), (2632, 7775), (3110, 6580), (3290, 6220), (4354, 4700)]