21741904

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{19139}}^1$

素因数の和:19218

約数の個数: 20

約数和(自身を含む): 42720480

約数和(自身を除く): 20978576

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 19139, 38278, 76556, 153112, 306224, 1358869, 2717738, 5435476, 10870952, 21741904]

約数ペア:

[(1, 21741904), (2, 10870952), (4, 5435476), (8, 2717738), (16, 1358869), (71, 306224), (142, 153112), (284, 76556), (568, 38278), (1136, 19139)]