20743978

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{7723}}^1$

素因数の和:7821

約数の個数: 16

約数和(自身を含む): 33367680

約数和(自身を除く): 12623702

約数列:

[1, 2, 17, 34, 79, 158, 1343, 2686, 7723, 15446, 131291, 262582, 610117, 1220234, 10371989, 20743978]

約数ペア:

[(1, 20743978), (2, 10371989), (17, 1220234), (34, 610117), (79, 262582), (158, 131291), (1343, 15446), (2686, 7723)]