128369240

素因数分解:

$2^3\times 5^1\times {\mathrm{3209231}}^1$

素因数の和:3209242

約数の個数: 16

約数和(自身を含む): 288830880

約数和(自身を除く): 160461640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3209231, 6418462, 12836924, 16046155, 25673848, 32092310, 64184620, 128369240]

約数ペア:

[(1, 128369240), (2, 64184620), (4, 32092310), (5, 25673848), (8, 16046155), (10, 12836924), (20, 6418462), (40, 3209231)]