21275548

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{193}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 44498944

約数和(自身を除く): 23223396

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 127, 193, 217, 254, 386, 434, 508, 772, 868, 889, 1351, 1778, 2702, 3556, 3937, 5404, 5983, 7874, 11966, 15748, 23932, 24511, 27559, 41881, 49022, 55118, 83762, 98044, 110236, 167524, 171577, 343154, 686308, 759841, 1519682, 3039364, 5318887, 10637774, 21275548]

約数ペア:

[(1, 21275548), (2, 10637774), (4, 5318887), (7, 3039364), (14, 1519682), (28, 759841), (31, 686308), (62, 343154), (124, 171577), (127, 167524), (193, 110236), (217, 98044), (254, 83762), (386, 55118), (434, 49022), (508, 41881), (772, 27559), (868, 24511), (889, 23932), (1351, 15748), (1778, 11966), (2702, 7874), (3556, 5983), (3937, 5404)]