21005864

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{238703}}^1$

素因数の和:238720

約数の個数: 16

約数和(自身を含む): 42966720

約数和(自身を除く): 21960856

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 238703, 477406, 954812, 1909624, 2625733, 5251466, 10502932, 21005864]

約数ペア:

[(1, 21005864), (2, 10502932), (4, 5251466), (8, 2625733), (11, 1909624), (22, 954812), (44, 477406), (88, 238703)]