20540650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31601}}^1$

素因数の和:31626

約数の個数: 24

約数和(自身を含む): 41145804

約数和(自身を除く): 20605154

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 31601, 63202, 158005, 316010, 410813, 790025, 821626, 1580050, 2054065, 4108130, 10270325, 20540650]

約数ペア:

[(1, 20540650), (2, 10270325), (5, 4108130), (10, 2054065), (13, 1580050), (25, 821626), (26, 790025), (50, 410813), (65, 316010), (130, 158005), (325, 63202), (650, 31601)]