13206921

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6911}}^1$

素因数の和:6941

約数の個数: 24

約数和(自身を含む): 22063104

約数和(自身を除く): 8856183

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 6911, 20733, 48377, 89843, 145131, 269529, 338639, 628901, 1015917, 1886703, 4402307, 13206921]

約数ペア:

[(1, 13206921), (3, 4402307), (7, 1886703), (13, 1015917), (21, 628901), (39, 338639), (49, 269529), (91, 145131), (147, 89843), (273, 48377), (637, 20733), (1911, 6911)]