260505903

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{4909}}^1$

素因数の和:4964

約数の個数: 36

約数和(自身を含む): 426521880

約数和(自身を除く): 166015977

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 361, 399, 931, 1083, 2527, 2793, 4909, 7581, 14727, 17689, 34363, 53067, 93271, 103089, 240541, 279813, 652897, 721623, 1772149, 1958691, 4570279, 5316447, 12405043, 13710837, 37215129, 86835301, 260505903]

約数ペア:

[(1, 260505903), (3, 86835301), (7, 37215129), (19, 13710837), (21, 12405043), (49, 5316447), (57, 4570279), (133, 1958691), (147, 1772149), (361, 721623), (399, 652897), (931, 279813), (1083, 240541), (2527, 103089), (2793, 93271), (4909, 53067), (7581, 34363), (14727, 17689)]