21408045477

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{78417749}}^1$

素因数の和:78417772

約数の個数: 16

約数和(自身を含む): 35131152000

約数和(自身を除く): 13723106523

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 78417749, 235253247, 548924243, 1019430737, 1646772729, 3058292211, 7136015159, 21408045477]

約数ペア:

[(1, 21408045477), (3, 7136015159), (7, 3058292211), (13, 1646772729), (21, 1019430737), (39, 548924243), (91, 235253247), (273, 78417749)]