12781509

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{367}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 19783680

約数和(自身を除く): 7002171

約数列:

[1, 3, 13, 19, 39, 47, 57, 141, 247, 367, 611, 741, 893, 1101, 1833, 2679, 4771, 6973, 11609, 14313, 17249, 20919, 34827, 51747, 90649, 224237, 271947, 327731, 672711, 983193, 4260503, 12781509]

約数ペア:

[(1, 12781509), (3, 4260503), (13, 983193), (19, 672711), (39, 327731), (47, 271947), (57, 224237), (141, 90649), (247, 51747), (367, 34827), (611, 20919), (741, 17249), (893, 14313), (1101, 11609), (1833, 6973), (2679, 4771)]