21456064

素因数分解:

$2^6\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1019}}^1$

素因数の和:1085

約数の個数: 56

約数和(自身を含む): 49743360

約数和(自身を除く): 28287296

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 56, 64, 94, 112, 188, 224, 329, 376, 448, 658, 752, 1019, 1316, 1504, 2038, 2632, 3008, 4076, 5264, 7133, 8152, 10528, 14266, 16304, 21056, 28532, 32608, 47893, 57064, 65216, 95786, 114128, 191572, 228256, 335251, 383144, 456512, 670502, 766288, 1341004, 1532576, 2682008, 3065152, 5364016, 10728032, 21456064]

約数ペア:

[(1, 21456064), (2, 10728032), (4, 5364016), (7, 3065152), (8, 2682008), (14, 1532576), (16, 1341004), (28, 766288), (32, 670502), (47, 456512), (56, 383144), (64, 335251), (94, 228256), (112, 191572), (188, 114128), (224, 95786), (329, 65216), (376, 57064), (448, 47893), (658, 32608), (752, 28532), (1019, 21056), (1316, 16304), (1504, 14266), (2038, 10528), (2632, 8152), (3008, 7133), (4076, 5264)]