21679210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{337}}^1\times {\mathrm{919}}^1$

素因数の和:1270

約数の個数: 32

約数和(自身を含む): 44778240

約数和(自身を除く): 23099030

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 337, 674, 919, 1685, 1838, 2359, 3370, 4595, 4718, 6433, 9190, 11795, 12866, 23590, 32165, 64330, 309703, 619406, 1548515, 2167921, 3097030, 4335842, 10839605, 21679210]

約数ペア:

[(1, 21679210), (2, 10839605), (5, 4335842), (7, 3097030), (10, 2167921), (14, 1548515), (35, 619406), (70, 309703), (337, 64330), (674, 32165), (919, 23590), (1685, 12866), (1838, 11795), (2359, 9190), (3370, 6433), (4595, 4718)]