12721826

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^2\times {\mathrm{109}}^1$

素因数の和:258

約数の個数: 24

約数和(自身を含む): 21053340

約数和(自身を除く): 8331514

約数列:

[1, 2, 13, 26, 67, 109, 134, 218, 871, 1417, 1742, 2834, 4489, 7303, 8978, 14606, 58357, 94939, 116714, 189878, 489301, 978602, 6360913, 12721826]

約数ペア:

[(1, 12721826), (2, 6360913), (13, 978602), (26, 489301), (67, 189878), (109, 116714), (134, 94939), (218, 58357), (871, 14606), (1417, 8978), (1742, 7303), (2834, 4489)]