21096656

素因数分解:

$2^4\times 7^2\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:472

約数の個数: 60

約数和(自身を含む): 48345120

約数和(自身を除く): 27248464

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 71, 98, 112, 142, 196, 284, 379, 392, 497, 568, 758, 784, 994, 1136, 1516, 1988, 2653, 3032, 3479, 3976, 5306, 6064, 6958, 7952, 10612, 13916, 18571, 21224, 26909, 27832, 37142, 42448, 53818, 55664, 74284, 107636, 148568, 188363, 215272, 297136, 376726, 430544, 753452, 1318541, 1506904, 2637082, 3013808, 5274164, 10548328, 21096656]

約数ペア:

[(1, 21096656), (2, 10548328), (4, 5274164), (7, 3013808), (8, 2637082), (14, 1506904), (16, 1318541), (28, 753452), (49, 430544), (56, 376726), (71, 297136), (98, 215272), (112, 188363), (142, 148568), (196, 107636), (284, 74284), (379, 55664), (392, 53818), (497, 42448), (568, 37142), (758, 27832), (784, 26909), (994, 21224), (1136, 18571), (1516, 13916), (1988, 10612), (2653, 7952), (3032, 6958), (3479, 6064), (3976, 5306)]