638560690

素因数分解:

$2^1\times 5^1\times {\mathrm{313}}^1\times {\mathrm{204013}}^1$

素因数の和:204333

約数の個数: 16

約数和(自身を含む): 1153087128

約数和(自身を除く): 514526438

約数列:

[1, 2, 5, 10, 313, 626, 1565, 3130, 204013, 408026, 1020065, 2040130, 63856069, 127712138, 319280345, 638560690]

約数ペア:

[(1, 638560690), (2, 319280345), (5, 127712138), (10, 63856069), (313, 2040130), (626, 1020065), (1565, 408026), (3130, 204013)]