20921995415

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1\times {\mathrm{386621}}^1$

素因数の和:386842

約数の個数: 16

約数和(自身を含む): 25609841280

約数和(自身を除く): 4687845865

約数列:

[1, 5, 79, 137, 395, 685, 10823, 54115, 386621, 1933105, 30543059, 52967077, 152715295, 264835385, 4184399083, 20921995415]

約数ペア:

[(1, 20921995415), (5, 4184399083), (79, 264835385), (137, 152715295), (395, 52967077), (685, 30543059), (10823, 1933105), (54115, 386621)]