20731977

素因数分解:

$3^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2551}}^1$

素因数の和:2610

約数の個数: 32

約数和(自身を含む): 35932160

約数和(自身を除く): 15200183

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 129, 189, 301, 387, 903, 1161, 2551, 2709, 7653, 8127, 17857, 22959, 53571, 68877, 109693, 160713, 329079, 482139, 767851, 987237, 2303553, 2961711, 6910659, 20731977]

約数ペア:

[(1, 20731977), (3, 6910659), (7, 2961711), (9, 2303553), (21, 987237), (27, 767851), (43, 482139), (63, 329079), (129, 160713), (189, 109693), (301, 68877), (387, 53571), (903, 22959), (1161, 17857), (2551, 8127), (2709, 7653)]