21384524

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{11399}}^1$

素因数の和:11477

約数の個数: 24

約数和(自身を含む): 43411200

約数和(自身を除く): 22026676

約数列:

[1, 2, 4, 7, 14, 28, 67, 134, 268, 469, 938, 1876, 11399, 22798, 45596, 79793, 159586, 319172, 763733, 1527466, 3054932, 5346131, 10692262, 21384524]

約数ペア:

[(1, 21384524), (2, 10692262), (4, 5346131), (7, 3054932), (14, 1527466), (28, 763733), (67, 319172), (134, 159586), (268, 79793), (469, 45596), (938, 22798), (1876, 11399)]