19621808

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{72139}}^1$

素因数の和:72164

約数の個数: 20

約数和(自身を含む): 40254120

約数和(自身を除く): 20632312

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 72139, 144278, 288556, 577112, 1154224, 1226363, 2452726, 4905452, 9810904, 19621808]

約数ペア:

[(1, 19621808), (2, 9810904), (4, 4905452), (8, 2452726), (16, 1226363), (17, 1154224), (34, 577112), (68, 288556), (136, 144278), (272, 72139)]