19905104

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{23473}}^1$

素因数の和:23534

約数の個数: 20

約数和(自身を含む): 39295476

約数和(自身を除く): 19390372

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 23473, 46946, 93892, 187784, 375568, 1244069, 2488138, 4976276, 9952552, 19905104]

約数ペア:

[(1, 19905104), (2, 9952552), (4, 4976276), (8, 2488138), (16, 1244069), (53, 375568), (106, 187784), (212, 93892), (424, 46946), (848, 23473)]