217445785

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{239}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 282124800

約数和(自身を除く): 64679015

約数列:

[1, 5, 19, 61, 95, 157, 239, 305, 785, 1159, 1195, 2983, 4541, 5795, 9577, 14579, 14915, 22705, 37523, 47885, 72895, 181963, 187615, 277001, 712937, 909815, 1385005, 2288903, 3564685, 11444515, 43489157, 217445785]

約数ペア:

[(1, 217445785), (5, 43489157), (19, 11444515), (61, 3564685), (95, 2288903), (157, 1385005), (239, 909815), (305, 712937), (785, 277001), (1159, 187615), (1195, 181963), (2983, 72895), (4541, 47885), (5795, 37523), (9577, 22705), (14579, 14915)]