251489215

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1\times {\mathrm{1949}}^1$

素因数の和:2282

約数の個数: 16

約数和(自身を含む): 305791200

約数和(自身を除く): 54301985

約数列:

[1, 5, 131, 197, 655, 985, 1949, 9745, 25807, 129035, 255319, 383953, 1276595, 1919765, 50297843, 251489215]

約数ペア:

[(1, 251489215), (5, 50297843), (131, 1919765), (197, 1276595), (655, 383953), (985, 255319), (1949, 129035), (9745, 25807)]