20100245

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{11789}}^1$

素因数の和:11836

約数の個数: 16

約数和(自身を含む): 27164160

約数和(自身を除く): 7063915

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 11789, 58945, 129679, 365459, 648395, 1827295, 4020049, 20100245]

約数ペア:

[(1, 20100245), (5, 4020049), (11, 1827295), (31, 648395), (55, 365459), (155, 129679), (341, 58945), (1705, 11789)]