20985368

素因数分解:

$2^3\times {\mathrm{97}}^1\times {\mathrm{27043}}^1$

素因数の和:27146

約数の個数: 16

約数和(自身を含む): 39754680

約数和(自身を除く): 18769312

約数列:

[1, 2, 4, 8, 97, 194, 388, 776, 27043, 54086, 108172, 216344, 2623171, 5246342, 10492684, 20985368]

約数ペア:

[(1, 20985368), (2, 10492684), (4, 5246342), (8, 2623171), (97, 216344), (194, 108172), (388, 54086), (776, 27043)]