20540135

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1721}}^1$

素因数の和:1775

約数の個数: 32

約数和(自身を含む): 31739904

約数和(自身を除く): 11199769

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 155, 217, 341, 385, 1085, 1705, 1721, 2387, 8605, 11935, 12047, 18931, 53351, 60235, 94655, 132517, 266755, 373457, 586861, 662585, 1867285, 2934305, 4108027, 20540135]

約数ペア:

[(1, 20540135), (5, 4108027), (7, 2934305), (11, 1867285), (31, 662585), (35, 586861), (55, 373457), (77, 266755), (155, 132517), (217, 94655), (341, 60235), (385, 53351), (1085, 18931), (1705, 12047), (1721, 11935), (2387, 8605)]