81618320

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{443}}^1$

素因数の和:517

約数の個数: 120

約数和(自身を含む): 225949824

約数和(自身を除く): 144331504

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 47, 49, 56, 70, 80, 94, 98, 112, 140, 188, 196, 235, 245, 280, 329, 376, 392, 443, 470, 490, 560, 658, 752, 784, 886, 940, 980, 1316, 1645, 1772, 1880, 1960, 2215, 2303, 2632, 3101, 3290, 3544, 3760, 3920, 4430, 4606, 5264, 6202, 6580, 7088, 8860, 9212, 11515, 12404, 13160, 15505, 17720, 18424, 20821, 21707, 23030, 24808, 26320, 31010, 35440, 36848, 41642, 43414, 46060, 49616, 62020, 83284, 86828, 92120, 104105, 108535, 124040, 145747, 166568, 173656, 184240, 208210, 217070, 248080, 291494, 333136, 347312, 416420, 434140, 582988, 728735, 832840, 868280, 1020229, 1165976, 1457470, 1665680, 1736560, 2040458, 2331952, 2914940, 4080916, 5101145, 5829880, 8161832, 10202290, 11659760, 16323664, 20404580, 40809160, 81618320]

約数ペア:

[(1, 81618320), (2, 40809160), (4, 20404580), (5, 16323664), (7, 11659760), (8, 10202290), (10, 8161832), (14, 5829880), (16, 5101145), (20, 4080916), (28, 2914940), (35, 2331952), (40, 2040458), (47, 1736560), (49, 1665680), (56, 1457470), (70, 1165976), (80, 1020229), (94, 868280), (98, 832840), (112, 728735), (140, 582988), (188, 434140), (196, 416420), (235, 347312), (245, 333136), (280, 291494), (329, 248080), (376, 217070), (392, 208210), (443, 184240), (470, 173656), (490, 166568), (560, 145747), (658, 124040), (752, 108535), (784, 104105), (886, 92120), (940, 86828), (980, 83284), (1316, 62020), (1645, 49616), (1772, 46060), (1880, 43414), (1960, 41642), (2215, 36848), (2303, 35440), (2632, 31010), (3101, 26320), (3290, 24808), (3544, 23030), (3760, 21707), (3920, 20821), (4430, 18424), (4606, 17720), (5264, 15505), (6202, 13160), (6580, 12404), (7088, 11515), (8860, 9212)]