21081836

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{310027}}^1$

素因数の和:310048

約数の個数: 12

約数和(自身を含む): 39063528

約数和(自身を除く): 17981692

約数列:

[1, 2, 4, 17, 34, 68, 310027, 620054, 1240108, 5270459, 10540918, 21081836]

約数ペア:

[(1, 21081836), (2, 10540918), (4, 5270459), (17, 1240108), (34, 620054), (68, 310027)]