638963575

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{683}}^1\times {\mathrm{1627}}^1$

素因数の和:2343

約数の個数: 24

約数和(自身を含む): 828482688

約数和(自身を除く): 189519113

約数列:

[1, 5, 23, 25, 115, 575, 683, 1627, 3415, 8135, 15709, 17075, 37421, 40675, 78545, 187105, 392725, 935525, 1111241, 5556205, 25558543, 27781025, 127792715, 638963575]

約数ペア:

[(1, 638963575), (5, 127792715), (23, 27781025), (25, 25558543), (115, 5556205), (575, 1111241), (683, 935525), (1627, 392725), (3415, 187105), (8135, 78545), (15709, 40675), (17075, 37421)]