20567855

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1303}}^1$

素因数の和:1367

約数の個数: 32

約数和(自身を含む): 31546368

約数和(自身を除く): 10978513

約数列:

[1, 5, 7, 11, 35, 41, 55, 77, 205, 287, 385, 451, 1303, 1435, 2255, 3157, 6515, 9121, 14333, 15785, 45605, 53423, 71665, 100331, 267115, 373961, 501655, 587653, 1869805, 2938265, 4113571, 20567855]

約数ペア:

[(1, 20567855), (5, 4113571), (7, 2938265), (11, 1869805), (35, 587653), (41, 501655), (55, 373961), (77, 267115), (205, 100331), (287, 71665), (385, 53423), (451, 45605), (1303, 15785), (1435, 14333), (2255, 9121), (3157, 6515)]