21931616

素因数分解:

$2^5\times 7^2\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:292

約数の個数: 72

約数和(自身を含む): 51193296

約数和(自身を除く): 29261680

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 71, 98, 112, 142, 196, 197, 224, 284, 392, 394, 497, 568, 784, 788, 994, 1136, 1379, 1568, 1576, 1988, 2272, 2758, 3152, 3479, 3976, 5516, 6304, 6958, 7952, 9653, 11032, 13916, 13987, 15904, 19306, 22064, 27832, 27974, 38612, 44128, 55664, 55948, 77224, 97909, 111328, 111896, 154448, 195818, 223792, 308896, 391636, 447584, 685363, 783272, 1370726, 1566544, 2741452, 3133088, 5482904, 10965808, 21931616]

約数ペア:

[(1, 21931616), (2, 10965808), (4, 5482904), (7, 3133088), (8, 2741452), (14, 1566544), (16, 1370726), (28, 783272), (32, 685363), (49, 447584), (56, 391636), (71, 308896), (98, 223792), (112, 195818), (142, 154448), (196, 111896), (197, 111328), (224, 97909), (284, 77224), (392, 55948), (394, 55664), (497, 44128), (568, 38612), (784, 27974), (788, 27832), (994, 22064), (1136, 19306), (1379, 15904), (1568, 13987), (1576, 13916), (1988, 11032), (2272, 9653), (2758, 7952), (3152, 6958), (3479, 6304), (3976, 5516)]