209788975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{40151}}^1$

素因数の和:40191

約数の個数: 24

約数和(自身を含む): 298730880

約数和(自身を除く): 88941905

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 275, 475, 1045, 5225, 40151, 200755, 441661, 762869, 1003775, 2208305, 3814345, 8391559, 11041525, 19071725, 41957795, 209788975]

約数ペア:

[(1, 209788975), (5, 41957795), (11, 19071725), (19, 11041525), (25, 8391559), (55, 3814345), (95, 2208305), (209, 1003775), (275, 762869), (475, 441661), (1045, 200755), (5225, 40151)]