21007728

素因数分解:

$2^4\times 3^3\times 7^1\times {\mathrm{6947}}^1$

素因数の和:6971

約数の個数: 80

約数和(自身を含む): 68924160

約数和(自身を除く): 47916432

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 36, 42, 48, 54, 56, 63, 72, 84, 108, 112, 126, 144, 168, 189, 216, 252, 336, 378, 432, 504, 756, 1008, 1512, 3024, 6947, 13894, 20841, 27788, 41682, 48629, 55576, 62523, 83364, 97258, 111152, 125046, 145887, 166728, 187569, 194516, 250092, 291774, 333456, 375138, 389032, 437661, 500184, 583548, 750276, 778064, 875322, 1000368, 1167096, 1312983, 1500552, 1750644, 2334192, 2625966, 3001104, 3501288, 5251932, 7002576, 10503864, 21007728]

約数ペア:

[(1, 21007728), (2, 10503864), (3, 7002576), (4, 5251932), (6, 3501288), (7, 3001104), (8, 2625966), (9, 2334192), (12, 1750644), (14, 1500552), (16, 1312983), (18, 1167096), (21, 1000368), (24, 875322), (27, 778064), (28, 750276), (36, 583548), (42, 500184), (48, 437661), (54, 389032), (56, 375138), (63, 333456), (72, 291774), (84, 250092), (108, 194516), (112, 187569), (126, 166728), (144, 145887), (168, 125046), (189, 111152), (216, 97258), (252, 83364), (336, 62523), (378, 55576), (432, 48629), (504, 41682), (756, 27788), (1008, 20841), (1512, 13894), (3024, 6947)]