20687520

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:203

約数の個数: 192

約数和(自身を含む): 76640256

約数和(自身を除く): 55952736

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 47, 48, 56, 60, 70, 80, 84, 94, 96, 105, 112, 120, 131, 140, 141, 160, 168, 188, 210, 224, 235, 240, 262, 280, 282, 329, 336, 376, 393, 420, 470, 480, 524, 560, 564, 655, 658, 672, 705, 752, 786, 840, 917, 940, 987, 1048, 1120, 1128, 1310, 1316, 1410, 1504, 1572, 1645, 1680, 1834, 1880, 1965, 1974, 2096, 2256, 2620, 2632, 2751, 2820, 3144, 3290, 3360, 3668, 3760, 3930, 3948, 4192, 4512, 4585, 4935, 5240, 5264, 5502, 5640, 6157, 6288, 6580, 7336, 7520, 7860, 7896, 9170, 9870, 10480, 10528, 11004, 11280, 12314, 12576, 13160, 13755, 14672, 15720, 15792, 18340, 18471, 19740, 20960, 22008, 22560, 24628, 26320, 27510, 29344, 30785, 31440, 31584, 36680, 36942, 39480, 43099, 44016, 49256, 52640, 55020, 61570, 62880, 73360, 73884, 78960, 86198, 88032, 92355, 98512, 110040, 123140, 129297, 146720, 147768, 157920, 172396, 184710, 197024, 215495, 220080, 246280, 258594, 295536, 344792, 369420, 430990, 440160, 492560, 517188, 591072, 646485, 689584, 738840, 861980, 985120, 1034376, 1292970, 1379168, 1477680, 1723960, 2068752, 2585940, 2955360, 3447920, 4137504, 5171880, 6895840, 10343760, 20687520]

約数ペア:

[(1, 20687520), (2, 10343760), (3, 6895840), (4, 5171880), (5, 4137504), (6, 3447920), (7, 2955360), (8, 2585940), (10, 2068752), (12, 1723960), (14, 1477680), (15, 1379168), (16, 1292970), (20, 1034376), (21, 985120), (24, 861980), (28, 738840), (30, 689584), (32, 646485), (35, 591072), (40, 517188), (42, 492560), (47, 440160), (48, 430990), (56, 369420), (60, 344792), (70, 295536), (80, 258594), (84, 246280), (94, 220080), (96, 215495), (105, 197024), (112, 184710), (120, 172396), (131, 157920), (140, 147768), (141, 146720), (160, 129297), (168, 123140), (188, 110040), (210, 98512), (224, 92355), (235, 88032), (240, 86198), (262, 78960), (280, 73884), (282, 73360), (329, 62880), (336, 61570), (376, 55020), (393, 52640), (420, 49256), (470, 44016), (480, 43099), (524, 39480), (560, 36942), (564, 36680), (655, 31584), (658, 31440), (672, 30785), (705, 29344), (752, 27510), (786, 26320), (840, 24628), (917, 22560), (940, 22008), (987, 20960), (1048, 19740), (1120, 18471), (1128, 18340), (1310, 15792), (1316, 15720), (1410, 14672), (1504, 13755), (1572, 13160), (1645, 12576), (1680, 12314), (1834, 11280), (1880, 11004), (1965, 10528), (1974, 10480), (2096, 9870), (2256, 9170), (2620, 7896), (2632, 7860), (2751, 7520), (2820, 7336), (3144, 6580), (3290, 6288), (3360, 6157), (3668, 5640), (3760, 5502), (3930, 5264), (3948, 5240), (4192, 4935), (4512, 4585)]