638113490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{9115907}}^1$

素因数の和:9115921

約数の個数: 16

約数和(自身を含む): 1312690752

約数和(自身を除く): 674577262

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 9115907, 18231814, 45579535, 63811349, 91159070, 127622698, 319056745, 638113490]

約数ペア:

[(1, 638113490), (2, 319056745), (5, 127622698), (7, 91159070), (10, 63811349), (14, 45579535), (35, 18231814), (70, 9115907)]