21281344

素因数分解:

$2^6\times 7^1\times {\mathrm{67}}^1\times {\mathrm{709}}^1$

素因数の和:795

約数の個数: 56

約数和(自身を含む): 49052480

約数和(自身を除く): 27771136

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 67, 112, 134, 224, 268, 448, 469, 536, 709, 938, 1072, 1418, 1876, 2144, 2836, 3752, 4288, 4963, 5672, 7504, 9926, 11344, 15008, 19852, 22688, 30016, 39704, 45376, 47503, 79408, 95006, 158816, 190012, 317632, 332521, 380024, 665042, 760048, 1330084, 1520096, 2660168, 3040192, 5320336, 10640672, 21281344]

約数ペア:

[(1, 21281344), (2, 10640672), (4, 5320336), (7, 3040192), (8, 2660168), (14, 1520096), (16, 1330084), (28, 760048), (32, 665042), (56, 380024), (64, 332521), (67, 317632), (112, 190012), (134, 158816), (224, 95006), (268, 79408), (448, 47503), (469, 45376), (536, 39704), (709, 30016), (938, 22688), (1072, 19852), (1418, 15008), (1876, 11344), (2144, 9926), (2836, 7504), (3752, 5672), (4288, 4963)]