20848156

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{10487}}^1$

素因数の和:10569

約数の個数: 24

約数和(自身を含む): 42287616

約数和(自身を除く): 21439460

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 10487, 20974, 41948, 73409, 146818, 293636, 744577, 1489154, 2978308, 5212039, 10424078, 20848156]

約数ペア:

[(1, 20848156), (2, 10424078), (4, 5212039), (7, 2978308), (14, 1489154), (28, 744577), (71, 293636), (142, 146818), (284, 73409), (497, 41948), (994, 20974), (1988, 10487)]