19778590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{353}}^1\times {\mathrm{431}}^1$

素因数の和:804

約数の個数: 32

約数和(自身を含む): 38537856

約数和(自身を除く): 18759266

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 353, 431, 706, 862, 1765, 2155, 3530, 4310, 4589, 5603, 9178, 11206, 22945, 28015, 45890, 56030, 152143, 304286, 760715, 1521430, 1977859, 3955718, 9889295, 19778590]

約数ペア:

[(1, 19778590), (2, 9889295), (5, 3955718), (10, 1977859), (13, 1521430), (26, 760715), (65, 304286), (130, 152143), (353, 56030), (431, 45890), (706, 28015), (862, 22945), (1765, 11206), (2155, 9178), (3530, 5603), (4310, 4589)]