20682904

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{3853}}^1$

素因数の和:3931

約数の個数: 32

約数和(自身を含む): 43010640

約数和(自身を除く): 22327736

約数列:

[1, 2, 4, 8, 11, 22, 44, 61, 88, 122, 244, 488, 671, 1342, 2684, 3853, 5368, 7706, 15412, 30824, 42383, 84766, 169532, 235033, 339064, 470066, 940132, 1880264, 2585363, 5170726, 10341452, 20682904]

約数ペア:

[(1, 20682904), (2, 10341452), (4, 5170726), (8, 2585363), (11, 1880264), (22, 940132), (44, 470066), (61, 339064), (88, 235033), (122, 169532), (244, 84766), (488, 42383), (671, 30824), (1342, 15412), (2684, 7706), (3853, 5368)]