21226907

素因数分解:

${\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:219

約数の個数: 24

約数和(自身を含む): 24735744

約数和(自身を除く): 3508837

約数列:

[1, 13, 23, 43, 127, 169, 299, 559, 989, 1651, 2921, 3887, 5461, 7267, 12857, 21463, 37973, 70993, 125603, 167141, 493649, 922909, 1632839, 21226907]

約数ペア:

[(1, 21226907), (13, 1632839), (23, 922909), (43, 493649), (127, 167141), (169, 125603), (299, 70993), (559, 37973), (989, 21463), (1651, 12857), (2921, 7267), (3887, 5461)]