20979208

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{167}}^1\times {\mathrm{383}}^1$

素因数の和:597

約数の個数: 32

約数和(自身を含む): 40642560

約数和(自身を除く): 19663352

約数列:

[1, 2, 4, 8, 41, 82, 164, 167, 328, 334, 383, 668, 766, 1336, 1532, 3064, 6847, 13694, 15703, 27388, 31406, 54776, 62812, 63961, 125624, 127922, 255844, 511688, 2622401, 5244802, 10489604, 20979208]

約数ペア:

[(1, 20979208), (2, 10489604), (4, 5244802), (8, 2622401), (41, 511688), (82, 255844), (164, 127922), (167, 125624), (328, 63961), (334, 62812), (383, 54776), (668, 31406), (766, 27388), (1336, 15703), (1532, 13694), (3064, 6847)]