21090402

素因数分解:

$2^1\times 3^3\times {\mathrm{23}}^1\times {\mathrm{16981}}^1$

素因数の和:17015

約数の個数: 32

約数和(自身を含む): 48908160

約数和(自身を除く): 27817758

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 46, 54, 69, 138, 207, 414, 621, 1242, 16981, 33962, 50943, 101886, 152829, 305658, 390563, 458487, 781126, 916974, 1171689, 2343378, 3515067, 7030134, 10545201, 21090402]

約数ペア:

[(1, 21090402), (2, 10545201), (3, 7030134), (6, 3515067), (9, 2343378), (18, 1171689), (23, 916974), (27, 781126), (46, 458487), (54, 390563), (69, 305658), (138, 152829), (207, 101886), (414, 50943), (621, 33962), (1242, 16981)]