20987097

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{1619}}^1$

素因数の和:1800

約数の個数: 16

約数和(自身を含む): 29160000

約数和(自身を除く): 8172903

約数列:

[1, 3, 29, 87, 149, 447, 1619, 4321, 4857, 12963, 46951, 140853, 241231, 723693, 6995699, 20987097]

約数ペア:

[(1, 20987097), (3, 6995699), (29, 723693), (87, 241231), (149, 140853), (447, 46951), (1619, 12963), (4321, 4857)]