20161218045

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1\times {\mathrm{200699}}^1$

素因数の和:200925

約数の個数: 32

約数和(自身を含む): 33312988800

約数和(自身を除く): 13151770755

約数列:

[1, 3, 5, 15, 37, 111, 181, 185, 543, 555, 905, 2715, 6697, 20091, 33485, 100455, 200699, 602097, 1003495, 3010485, 7425863, 22277589, 36326519, 37129315, 108979557, 111387945, 181632595, 544897785, 1344081203, 4032243609, 6720406015, 20161218045]

約数ペア:

[(1, 20161218045), (3, 6720406015), (5, 4032243609), (15, 1344081203), (37, 544897785), (111, 181632595), (181, 111387945), (185, 108979557), (543, 37129315), (555, 36326519), (905, 22277589), (2715, 7425863), (6697, 3010485), (20091, 1003495), (33485, 602097), (100455, 200699)]