21997193757

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{550439}}^1$

素因数の和:550633

約数の個数: 32

約数和(自身を含む): 36778199040

約数和(自身を除く): 14781005283

約数列:

[1, 3, 7, 11, 21, 33, 77, 173, 231, 519, 1211, 1903, 3633, 5709, 13321, 39963, 550439, 1651317, 3853073, 6054829, 11559219, 18164487, 42383803, 95225947, 127151409, 285677841, 666581629, 1047485417, 1999744887, 3142456251, 7332397919, 21997193757]

約数ペア:

[(1, 21997193757), (3, 7332397919), (7, 3142456251), (11, 1999744887), (21, 1047485417), (33, 666581629), (77, 285677841), (173, 127151409), (231, 95225947), (519, 42383803), (1211, 18164487), (1903, 11559219), (3633, 6054829), (5709, 3853073), (13321, 1651317), (39963, 550439)]