21305808

素因数分解:

$2^4\times 3^3\times {\mathrm{149}}^1\times {\mathrm{331}}^1$

素因数の和:497

約数の個数: 80

約数和(自身を含む): 61752000

約数和(自身を除く): 40446192

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 144, 149, 216, 298, 331, 432, 447, 596, 662, 894, 993, 1192, 1324, 1341, 1788, 1986, 2384, 2648, 2682, 2979, 3576, 3972, 4023, 5296, 5364, 5958, 7152, 7944, 8046, 8937, 10728, 11916, 15888, 16092, 17874, 21456, 23832, 32184, 35748, 47664, 49319, 64368, 71496, 98638, 142992, 147957, 197276, 295914, 394552, 443871, 591828, 789104, 887742, 1183656, 1331613, 1775484, 2367312, 2663226, 3550968, 5326452, 7101936, 10652904, 21305808]

約数ペア:

[(1, 21305808), (2, 10652904), (3, 7101936), (4, 5326452), (6, 3550968), (8, 2663226), (9, 2367312), (12, 1775484), (16, 1331613), (18, 1183656), (24, 887742), (27, 789104), (36, 591828), (48, 443871), (54, 394552), (72, 295914), (108, 197276), (144, 147957), (149, 142992), (216, 98638), (298, 71496), (331, 64368), (432, 49319), (447, 47664), (596, 35748), (662, 32184), (894, 23832), (993, 21456), (1192, 17874), (1324, 16092), (1341, 15888), (1788, 11916), (1986, 10728), (2384, 8937), (2648, 8046), (2682, 7944), (2979, 7152), (3576, 5958), (3972, 5364), (4023, 5296)]