64520090

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{81671}}^1$

素因数の和:81757

約数の個数: 16

約数和(自身を含む): 117607680

約数和(自身を除く): 53087590

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 81671, 163342, 408355, 816710, 6452009, 12904018, 32260045, 64520090]

約数ペア:

[(1, 64520090), (2, 32260045), (5, 12904018), (10, 6452009), (79, 816710), (158, 408355), (395, 163342), (790, 81671)]