21755160

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:210

約数の個数: 192

約数和(自身を含む): 82555200

約数和(自身を除く): 60800040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 89, 90, 97, 105, 120, 126, 140, 168, 178, 180, 194, 210, 252, 267, 280, 291, 315, 356, 360, 388, 420, 445, 485, 504, 534, 582, 623, 630, 679, 712, 776, 801, 840, 873, 890, 970, 1068, 1164, 1246, 1260, 1335, 1358, 1455, 1602, 1746, 1780, 1869, 1940, 2037, 2136, 2328, 2492, 2520, 2670, 2716, 2910, 3115, 3204, 3395, 3492, 3560, 3738, 3880, 4005, 4074, 4365, 4984, 5340, 5432, 5607, 5820, 6111, 6230, 6408, 6790, 6984, 7476, 8010, 8148, 8633, 8730, 9345, 10185, 10680, 11214, 11640, 12222, 12460, 13580, 14952, 16020, 16296, 17266, 17460, 18690, 20370, 22428, 24444, 24920, 25899, 27160, 28035, 30555, 32040, 34532, 34920, 37380, 40740, 43165, 44856, 48888, 51798, 56070, 60431, 61110, 69064, 74760, 77697, 81480, 86330, 103596, 112140, 120862, 122220, 129495, 155394, 172660, 181293, 207192, 224280, 241724, 244440, 258990, 302155, 310788, 345320, 362586, 388485, 483448, 517980, 543879, 604310, 621576, 725172, 776970, 906465, 1035960, 1087758, 1208620, 1450344, 1553940, 1812930, 2175516, 2417240, 2719395, 3107880, 3625860, 4351032, 5438790, 7251720, 10877580, 21755160]

約数ペア:

[(1, 21755160), (2, 10877580), (3, 7251720), (4, 5438790), (5, 4351032), (6, 3625860), (7, 3107880), (8, 2719395), (9, 2417240), (10, 2175516), (12, 1812930), (14, 1553940), (15, 1450344), (18, 1208620), (20, 1087758), (21, 1035960), (24, 906465), (28, 776970), (30, 725172), (35, 621576), (36, 604310), (40, 543879), (42, 517980), (45, 483448), (56, 388485), (60, 362586), (63, 345320), (70, 310788), (72, 302155), (84, 258990), (89, 244440), (90, 241724), (97, 224280), (105, 207192), (120, 181293), (126, 172660), (140, 155394), (168, 129495), (178, 122220), (180, 120862), (194, 112140), (210, 103596), (252, 86330), (267, 81480), (280, 77697), (291, 74760), (315, 69064), (356, 61110), (360, 60431), (388, 56070), (420, 51798), (445, 48888), (485, 44856), (504, 43165), (534, 40740), (582, 37380), (623, 34920), (630, 34532), (679, 32040), (712, 30555), (776, 28035), (801, 27160), (840, 25899), (873, 24920), (890, 24444), (970, 22428), (1068, 20370), (1164, 18690), (1246, 17460), (1260, 17266), (1335, 16296), (1358, 16020), (1455, 14952), (1602, 13580), (1746, 12460), (1780, 12222), (1869, 11640), (1940, 11214), (2037, 10680), (2136, 10185), (2328, 9345), (2492, 8730), (2520, 8633), (2670, 8148), (2716, 8010), (2910, 7476), (3115, 6984), (3204, 6790), (3395, 6408), (3492, 6230), (3560, 6111), (3738, 5820), (3880, 5607), (4005, 5432), (4074, 5340), (4365, 4984)]