20991610

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{757}}^1$

素因数の和:870

約数の個数: 32

約数和(自身を含む): 39294720

約数和(自身を除く): 18303110

約数列:

[1, 2, 5, 10, 47, 59, 94, 118, 235, 295, 470, 590, 757, 1514, 2773, 3785, 5546, 7570, 13865, 27730, 35579, 44663, 71158, 89326, 177895, 223315, 355790, 446630, 2099161, 4198322, 10495805, 20991610]

約数ペア:

[(1, 20991610), (2, 10495805), (5, 4198322), (10, 2099161), (47, 446630), (59, 355790), (94, 223315), (118, 177895), (235, 89326), (295, 71158), (470, 44663), (590, 35579), (757, 27730), (1514, 13865), (2773, 7570), (3785, 5546)]