39989744

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{17981}}^1$

素因数の和:18128

約数の個数: 20

約数和(自身を含む): 78041880

約数和(自身を除く): 38052136

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 17981, 35962, 71924, 143848, 287696, 2499359, 4998718, 9997436, 19994872, 39989744]

約数ペア:

[(1, 39989744), (2, 19994872), (4, 9997436), (8, 4998718), (16, 2499359), (139, 287696), (278, 143848), (556, 71924), (1112, 35962), (2224, 17981)]