20989849695

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{37819549}}^1$

素因数の和:37819594

約数の個数: 16

約数和(自身を含む): 34491429600

約数和(自身を除く): 13501579905

約数列:

[1, 3, 5, 15, 37, 111, 185, 555, 37819549, 113458647, 189097745, 567293235, 1399323313, 4197969939, 6996616565, 20989849695]

約数ペア:

[(1, 20989849695), (3, 6996616565), (5, 4197969939), (15, 1399323313), (37, 567293235), (111, 189097745), (185, 113458647), (555, 37819549)]