20761839

素因数分解:

$3^4\times 7^2\times {\mathrm{5231}}^1$

素因数の和:5257

約数の個数: 30

約数和(自身を含む): 36085104

約数和(自身を除く): 15323265

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 5231, 15693, 36617, 47079, 109851, 141237, 256319, 329553, 423711, 768957, 988659, 2306871, 2965977, 6920613, 20761839]

約数ペア:

[(1, 20761839), (3, 6920613), (7, 2965977), (9, 2306871), (21, 988659), (27, 768957), (49, 423711), (63, 329553), (81, 256319), (147, 141237), (189, 109851), (441, 47079), (567, 36617), (1323, 15693), (3969, 5231)]