138640575

素因数分解:

$3^1\times 5^2\times {\mathrm{103}}^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 234913536

約数和(自身を除く): 96272961

約数列:

[1, 3, 5, 15, 25, 75, 103, 131, 137, 309, 393, 411, 515, 655, 685, 1545, 1965, 2055, 2575, 3275, 3425, 7725, 9825, 10275, 13493, 14111, 17947, 40479, 42333, 53841, 67465, 70555, 89735, 202395, 211665, 269205, 337325, 352775, 448675, 1011975, 1058325, 1346025, 1848541, 5545623, 9242705, 27728115, 46213525, 138640575]

約数ペア:

[(1, 138640575), (3, 46213525), (5, 27728115), (15, 9242705), (25, 5545623), (75, 1848541), (103, 1346025), (131, 1058325), (137, 1011975), (309, 448675), (393, 352775), (411, 337325), (515, 269205), (655, 211665), (685, 202395), (1545, 89735), (1965, 70555), (2055, 67465), (2575, 53841), (3275, 42333), (3425, 40479), (7725, 17947), (9825, 14111), (10275, 13493)]