161921439

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{20147}}^1$

素因数の和:20219

約数の個数: 24

約数和(自身を含む): 251447040

約数和(自身を除く): 89525601

約数列:

[1, 3, 9, 19, 47, 57, 141, 171, 423, 893, 2679, 8037, 20147, 60441, 181323, 382793, 946909, 1148379, 2840727, 3445137, 8522181, 17991271, 53973813, 161921439]

約数ペア:

[(1, 161921439), (3, 53973813), (9, 17991271), (19, 8522181), (47, 3445137), (57, 2840727), (141, 1148379), (171, 946909), (423, 382793), (893, 181323), (2679, 60441), (8037, 20147)]