243815

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:71

約数の個数: 24

約数和(自身を含む): 357504

約数和(自身を除く): 113689

約数列:

[1, 5, 11, 13, 31, 55, 65, 121, 143, 155, 341, 403, 605, 715, 1573, 1705, 2015, 3751, 4433, 7865, 18755, 22165, 48763, 243815]

約数ペア:

[(1, 243815), (5, 48763), (11, 22165), (13, 18755), (31, 7865), (55, 4433), (65, 3751), (121, 2015), (143, 1705), (155, 1573), (341, 715), (403, 605)]