20909109

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{541}}^1\times {\mathrm{991}}^1$

素因数の和:1548

約数の個数: 16

約数和(自身を含む): 30109184

約数和(自身を除く): 9200075

約数列:

[1, 3, 13, 39, 541, 991, 1623, 2973, 7033, 12883, 21099, 38649, 536131, 1608393, 6969703, 20909109]

約数ペア:

[(1, 20909109), (3, 6969703), (13, 1608393), (39, 536131), (541, 38649), (991, 21099), (1623, 12883), (2973, 7033)]