20926041280

素因数分解:

$2^6\times 5^1\times {\mathrm{439}}^1\times {\mathrm{148961}}^1$

素因数の和:149417

約数の個数: 56

約数和(自身を含む): 49943979360

約数和(自身を除く): 29017938080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 439, 878, 1756, 2195, 3512, 4390, 7024, 8780, 14048, 17560, 28096, 35120, 70240, 140480, 148961, 297922, 595844, 744805, 1191688, 1489610, 2383376, 2979220, 4766752, 5958440, 9533504, 11916880, 23833760, 47667520, 65393879, 130787758, 261575516, 326969395, 523151032, 653938790, 1046302064, 1307877580, 2092604128, 2615755160, 4185208256, 5231510320, 10463020640, 20926041280]

約数ペア:

[(1, 20926041280), (2, 10463020640), (4, 5231510320), (5, 4185208256), (8, 2615755160), (10, 2092604128), (16, 1307877580), (20, 1046302064), (32, 653938790), (40, 523151032), (64, 326969395), (80, 261575516), (160, 130787758), (320, 65393879), (439, 47667520), (878, 23833760), (1756, 11916880), (2195, 9533504), (3512, 5958440), (4390, 4766752), (7024, 2979220), (8780, 2383376), (14048, 1489610), (17560, 1191688), (28096, 744805), (35120, 595844), (70240, 297922), (140480, 148961)]