20891464

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{5521}}^1$

素因数の和:5581

約数の個数: 32

約数和(自身を含む): 43734240

約数和(自身を除く): 22842776

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 86, 88, 172, 344, 473, 946, 1892, 3784, 5521, 11042, 22084, 44168, 60731, 121462, 237403, 242924, 474806, 485848, 949612, 1899224, 2611433, 5222866, 10445732, 20891464]

約数ペア:

[(1, 20891464), (2, 10445732), (4, 5222866), (8, 2611433), (11, 1899224), (22, 949612), (43, 485848), (44, 474806), (86, 242924), (88, 237403), (172, 121462), (344, 60731), (473, 44168), (946, 22084), (1892, 11042), (3784, 5521)]