21591717

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1951}}^1$

素因数の和:2009

約数の個数: 32

約数和(自身を含む): 35979264

約数和(自身を除く): 14387547

約数列:

[1, 3, 7, 17, 21, 31, 51, 93, 119, 217, 357, 527, 651, 1581, 1951, 3689, 5853, 11067, 13657, 33167, 40971, 60481, 99501, 181443, 232169, 423367, 696507, 1028177, 1270101, 3084531, 7197239, 21591717]

約数ペア:

[(1, 21591717), (3, 7197239), (7, 3084531), (17, 1270101), (21, 1028177), (31, 696507), (51, 423367), (93, 232169), (119, 181443), (217, 99501), (357, 60481), (527, 40971), (651, 33167), (1581, 13657), (1951, 11067), (3689, 5853)]