18219981

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{3361}}^1$

素因数の和:3516

約数の個数: 16

約数和(自身を含む): 26358080

約数和(自身を除く): 8138099

約数列:

[1, 3, 13, 39, 139, 417, 1807, 3361, 5421, 10083, 43693, 131079, 467179, 1401537, 6073327, 18219981]

約数ペア:

[(1, 18219981), (3, 6073327), (13, 1401537), (39, 467179), (139, 131079), (417, 43693), (1807, 10083), (3361, 5421)]