20553742

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{21727}}^1$

素因数の和:21783

約数の個数: 16

約数和(自身を含む): 34417152

約数和(自身を除く): 13863410

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 21727, 43454, 238997, 477994, 934261, 1868522, 10276871, 20553742]

約数ペア:

[(1, 20553742), (2, 10276871), (11, 1868522), (22, 934261), (43, 477994), (86, 238997), (473, 43454), (946, 21727)]