639405

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1093}}^1$

素因数の和:1117

約数の個数: 24

約数和(自身を含む): 1194648

約数和(自身を除く): 555243

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 1093, 3279, 5465, 9837, 14209, 16395, 42627, 49185, 71045, 127881, 213135, 639405]

約数ペア:

[(1, 639405), (3, 213135), (5, 127881), (9, 71045), (13, 49185), (15, 42627), (39, 16395), (45, 14209), (65, 9837), (117, 5465), (195, 3279), (585, 1093)]