20888970520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4315903}}^1$

素因数の和:4315936

約数の個数: 48

約数和(自身を含む): 51661370880

約数和(自身を除く): 30772400360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4840, 4315903, 8631806, 17263612, 21579515, 34527224, 43159030, 47474933, 86318060, 94949866, 172636120, 189899732, 237374665, 379799464, 474749330, 522224263, 949498660, 1044448526, 1898997320, 2088897052, 2611121315, 4177794104, 5222242630, 10444485260, 20888970520]

約数ペア:

[(1, 20888970520), (2, 10444485260), (4, 5222242630), (5, 4177794104), (8, 2611121315), (10, 2088897052), (11, 1898997320), (20, 1044448526), (22, 949498660), (40, 522224263), (44, 474749330), (55, 379799464), (88, 237374665), (110, 189899732), (121, 172636120), (220, 94949866), (242, 86318060), (440, 47474933), (484, 43159030), (605, 34527224), (968, 21579515), (1210, 17263612), (2420, 8631806), (4840, 4315903)]