21317384

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{242243}}^1$

素因数の和:242260

約数の個数: 16

約数和(自身を含む): 43603920

約数和(自身を除く): 22286536

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 242243, 484486, 968972, 1937944, 2664673, 5329346, 10658692, 21317384]

約数ペア:

[(1, 21317384), (2, 10658692), (4, 5329346), (8, 2664673), (11, 1937944), (22, 968972), (44, 484486), (88, 242243)]