21255882

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{208391}}^1$

素因数の和:208413

約数の個数: 16

約数和(自身を含む): 45012672

約数和(自身を除く): 23756790

約数列:

[1, 2, 3, 6, 17, 34, 51, 102, 208391, 416782, 625173, 1250346, 3542647, 7085294, 10627941, 21255882]

約数ペア:

[(1, 21255882), (2, 10627941), (3, 7085294), (6, 3542647), (17, 1250346), (34, 625173), (51, 416782), (102, 208391)]