20313215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{593}}^1$

素因数の和:659

約数の個数: 32

約数和(自身を含む): 28740096

約数和(自身を除く): 8426881

約数列:

[1, 5, 13, 17, 31, 65, 85, 155, 221, 403, 527, 593, 1105, 2015, 2635, 2965, 6851, 7709, 10081, 18383, 34255, 38545, 50405, 91915, 131053, 238979, 312511, 655265, 1194895, 1562555, 4062643, 20313215]

約数ペア:

[(1, 20313215), (5, 4062643), (13, 1562555), (17, 1194895), (31, 655265), (65, 312511), (85, 238979), (155, 131053), (221, 91915), (403, 50405), (527, 38545), (593, 34255), (1105, 18383), (2015, 10081), (2635, 7709), (2965, 6851)]