21587160

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{829}}^1$

素因数の和:881

約数の個数: 128

約数和(自身を含む): 76492800

約数和(自身を除く): 54905640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 56, 60, 62, 70, 84, 93, 105, 120, 124, 140, 155, 168, 186, 210, 217, 248, 280, 310, 372, 420, 434, 465, 620, 651, 744, 829, 840, 868, 930, 1085, 1240, 1302, 1658, 1736, 1860, 2170, 2487, 2604, 3255, 3316, 3720, 4145, 4340, 4974, 5208, 5803, 6510, 6632, 8290, 8680, 9948, 11606, 12435, 13020, 16580, 17409, 19896, 23212, 24870, 25699, 26040, 29015, 33160, 34818, 46424, 49740, 51398, 58030, 69636, 77097, 87045, 99480, 102796, 116060, 128495, 139272, 154194, 174090, 179893, 205592, 232120, 256990, 308388, 348180, 359786, 385485, 513980, 539679, 616776, 696360, 719572, 770970, 899465, 1027960, 1079358, 1439144, 1541940, 1798930, 2158716, 2698395, 3083880, 3597860, 4317432, 5396790, 7195720, 10793580, 21587160]

約数ペア:

[(1, 21587160), (2, 10793580), (3, 7195720), (4, 5396790), (5, 4317432), (6, 3597860), (7, 3083880), (8, 2698395), (10, 2158716), (12, 1798930), (14, 1541940), (15, 1439144), (20, 1079358), (21, 1027960), (24, 899465), (28, 770970), (30, 719572), (31, 696360), (35, 616776), (40, 539679), (42, 513980), (56, 385485), (60, 359786), (62, 348180), (70, 308388), (84, 256990), (93, 232120), (105, 205592), (120, 179893), (124, 174090), (140, 154194), (155, 139272), (168, 128495), (186, 116060), (210, 102796), (217, 99480), (248, 87045), (280, 77097), (310, 69636), (372, 58030), (420, 51398), (434, 49740), (465, 46424), (620, 34818), (651, 33160), (744, 29015), (829, 26040), (840, 25699), (868, 24870), (930, 23212), (1085, 19896), (1240, 17409), (1302, 16580), (1658, 13020), (1736, 12435), (1860, 11606), (2170, 9948), (2487, 8680), (2604, 8290), (3255, 6632), (3316, 6510), (3720, 5803), (4145, 5208), (4340, 4974)]