217852215

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{823}}^1\times {\mathrm{2521}}^1$

素因数の和:3359

約数の個数: 32

約数和(自身を含む): 399000576

約数和(自身を除く): 181148361

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 823, 2469, 2521, 4115, 5761, 7563, 12345, 12605, 17283, 17647, 28805, 37815, 52941, 86415, 88235, 264705, 2074783, 6224349, 10373915, 14523481, 31121745, 43570443, 72617405, 217852215]

約数ペア:

[(1, 217852215), (3, 72617405), (5, 43570443), (7, 31121745), (15, 14523481), (21, 10373915), (35, 6224349), (105, 2074783), (823, 264705), (2469, 88235), (2521, 86415), (4115, 52941), (5761, 37815), (7563, 28805), (12345, 17647), (12605, 17283)]