21579404

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{10009}}^1$

素因数の和:10038

約数の個数: 36

約数和(自身を含む): 47927880

約数和(自身を除く): 26348476

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 98, 154, 196, 308, 539, 1078, 2156, 10009, 20018, 40036, 70063, 110099, 140126, 220198, 280252, 440396, 490441, 770693, 980882, 1541386, 1961764, 3082772, 5394851, 10789702, 21579404]

約数ペア:

[(1, 21579404), (2, 10789702), (4, 5394851), (7, 3082772), (11, 1961764), (14, 1541386), (22, 980882), (28, 770693), (44, 490441), (49, 440396), (77, 280252), (98, 220198), (154, 140126), (196, 110099), (308, 70063), (539, 40036), (1078, 20018), (2156, 10009)]