20757538

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{263}}^1$

素因数の和:382

約数の個数: 32

約数和(自身を含む): 34467840

約数和(自身を除く): 13710302

約数列:

[1, 2, 19, 31, 38, 62, 67, 134, 263, 526, 589, 1178, 1273, 2077, 2546, 4154, 4997, 8153, 9994, 16306, 17621, 35242, 39463, 78926, 154907, 309814, 334799, 546251, 669598, 1092502, 10378769, 20757538]

約数ペア:

[(1, 20757538), (2, 10378769), (19, 1092502), (31, 669598), (38, 546251), (62, 334799), (67, 309814), (134, 154907), (263, 78926), (526, 39463), (589, 35242), (1178, 17621), (1273, 16306), (2077, 9994), (2546, 8153), (4154, 4997)]