21784976

素因数分解:

$2^4\times {\mathrm{409}}^1\times {\mathrm{3329}}^1$

素因数の和:3746

約数の個数: 20

約数和(自身を含む): 42324300

約数和(自身を除く): 20539324

約数列:

[1, 2, 4, 8, 16, 409, 818, 1636, 3272, 3329, 6544, 6658, 13316, 26632, 53264, 1361561, 2723122, 5446244, 10892488, 21784976]

約数ペア:

[(1, 21784976), (2, 10892488), (4, 5446244), (8, 2723122), (16, 1361561), (409, 53264), (818, 26632), (1636, 13316), (3272, 6658), (3329, 6544)]