21043688

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{154733}}^1$

素因数の和:154756

約数の個数: 16

約数和(自身を含む): 41778180

約数和(自身を除く): 20734492

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 154733, 309466, 618932, 1237864, 2630461, 5260922, 10521844, 21043688]

約数ペア:

[(1, 21043688), (2, 10521844), (4, 5260922), (8, 2630461), (17, 1237864), (34, 618932), (68, 309466), (136, 154733)]