21390248

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{7841}}^1$

素因数の和:7889

約数の個数: 32

約数和(自身を含む): 45169920

約数和(自身を除く): 23779672

約数列:

[1, 2, 4, 8, 11, 22, 31, 44, 62, 88, 124, 248, 341, 682, 1364, 2728, 7841, 15682, 31364, 62728, 86251, 172502, 243071, 345004, 486142, 690008, 972284, 1944568, 2673781, 5347562, 10695124, 21390248]

約数ペア:

[(1, 21390248), (2, 10695124), (4, 5347562), (8, 2673781), (11, 1944568), (22, 972284), (31, 690008), (44, 486142), (62, 345004), (88, 243071), (124, 172502), (248, 86251), (341, 62728), (682, 31364), (1364, 15682), (2728, 7841)]