19771647

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7079}}^1$

素因数の和:7115

約数の個数: 24

約数和(自身を含む): 32284800

約数和(自身を除く): 12513153

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7079, 21237, 49553, 134501, 148659, 346871, 403503, 941507, 1040613, 2824521, 6590549, 19771647]

約数ペア:

[(1, 19771647), (3, 6590549), (7, 2824521), (19, 1040613), (21, 941507), (49, 403503), (57, 346871), (133, 148659), (147, 134501), (399, 49553), (931, 21237), (2793, 7079)]