20905947

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{683}}^1$

素因数の和:887

約数の個数: 24

約数和(自身を含む): 32011200

約数和(自身を除く): 11105253

約数列:

[1, 3, 9, 19, 57, 171, 179, 537, 683, 1611, 2049, 3401, 6147, 10203, 12977, 30609, 38931, 116793, 122257, 366771, 1100313, 2322883, 6968649, 20905947]

約数ペア:

[(1, 20905947), (3, 6968649), (9, 2322883), (19, 1100313), (57, 366771), (171, 122257), (179, 116793), (537, 38931), (683, 30609), (1611, 12977), (2049, 10203), (3401, 6147)]