21429240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{263}}^1$

素因数の和:381

約数の個数: 128

約数和(自身を含む): 74511360

約数和(自身を除く): 53082120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 97, 105, 120, 140, 168, 194, 210, 263, 280, 291, 388, 420, 485, 526, 582, 679, 776, 789, 840, 970, 1052, 1164, 1315, 1358, 1455, 1578, 1841, 1940, 2037, 2104, 2328, 2630, 2716, 2910, 3156, 3395, 3682, 3880, 3945, 4074, 5260, 5432, 5523, 5820, 6312, 6790, 7364, 7890, 8148, 9205, 10185, 10520, 11046, 11640, 13580, 14728, 15780, 16296, 18410, 20370, 22092, 25511, 27160, 27615, 31560, 36820, 40740, 44184, 51022, 55230, 73640, 76533, 81480, 102044, 110460, 127555, 153066, 178577, 204088, 220920, 255110, 306132, 357154, 382665, 510220, 535731, 612264, 714308, 765330, 892885, 1020440, 1071462, 1428616, 1530660, 1785770, 2142924, 2678655, 3061320, 3571540, 4285848, 5357310, 7143080, 10714620, 21429240]

約数ペア:

[(1, 21429240), (2, 10714620), (3, 7143080), (4, 5357310), (5, 4285848), (6, 3571540), (7, 3061320), (8, 2678655), (10, 2142924), (12, 1785770), (14, 1530660), (15, 1428616), (20, 1071462), (21, 1020440), (24, 892885), (28, 765330), (30, 714308), (35, 612264), (40, 535731), (42, 510220), (56, 382665), (60, 357154), (70, 306132), (84, 255110), (97, 220920), (105, 204088), (120, 178577), (140, 153066), (168, 127555), (194, 110460), (210, 102044), (263, 81480), (280, 76533), (291, 73640), (388, 55230), (420, 51022), (485, 44184), (526, 40740), (582, 36820), (679, 31560), (776, 27615), (789, 27160), (840, 25511), (970, 22092), (1052, 20370), (1164, 18410), (1315, 16296), (1358, 15780), (1455, 14728), (1578, 13580), (1841, 11640), (1940, 11046), (2037, 10520), (2104, 10185), (2328, 9205), (2630, 8148), (2716, 7890), (2910, 7364), (3156, 6790), (3395, 6312), (3682, 5820), (3880, 5523), (3945, 5432), (4074, 5260)]