20179467

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{787}}^1$

素因数の和:848

約数の個数: 48

約数和(自身を含む): 37370112

約数和(自身を除く): 17190645

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 63, 77, 99, 111, 231, 259, 333, 407, 693, 777, 787, 1221, 2331, 2361, 2849, 3663, 5509, 7083, 8547, 8657, 16527, 25641, 25971, 29119, 49581, 60599, 77913, 87357, 181797, 203833, 262071, 320309, 545391, 611499, 960927, 1834497, 2242163, 2882781, 6726489, 20179467]

約数ペア:

[(1, 20179467), (3, 6726489), (7, 2882781), (9, 2242163), (11, 1834497), (21, 960927), (33, 611499), (37, 545391), (63, 320309), (77, 262071), (99, 203833), (111, 181797), (231, 87357), (259, 77913), (333, 60599), (407, 49581), (693, 29119), (777, 25971), (787, 25641), (1221, 16527), (2331, 8657), (2361, 8547), (2849, 7083), (3663, 5509)]