128125720

素因数分解:

$2^3\times 5^1\times {\mathrm{797}}^1\times {\mathrm{4019}}^1$

素因数の和:4827

約数の個数: 32

約数和(自身を含む): 288716400

約数和(自身を除く): 160590680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 797, 1594, 3188, 3985, 4019, 6376, 7970, 8038, 15940, 16076, 20095, 31880, 32152, 40190, 80380, 160760, 3203143, 6406286, 12812572, 16015715, 25625144, 32031430, 64062860, 128125720]

約数ペア:

[(1, 128125720), (2, 64062860), (4, 32031430), (5, 25625144), (8, 16015715), (10, 12812572), (20, 6406286), (40, 3203143), (797, 160760), (1594, 80380), (3188, 40190), (3985, 32152), (4019, 31880), (6376, 20095), (7970, 16076), (8038, 15940)]