20532050480

素因数分解:

$2^4\times 5^1\times {\mathrm{641}}^1\times {\mathrm{400391}}^1$

素因数の和:401045

約数の個数: 40

約数和(自身を含む): 47811609504

約数和(自身を除く): 27279559024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641, 1282, 2564, 3205, 5128, 6410, 10256, 12820, 25640, 51280, 400391, 800782, 1601564, 2001955, 3203128, 4003910, 6406256, 8007820, 16015640, 32031280, 256650631, 513301262, 1026602524, 1283253155, 2053205048, 2566506310, 4106410096, 5133012620, 10266025240, 20532050480]

約数ペア:

[(1, 20532050480), (2, 10266025240), (4, 5133012620), (5, 4106410096), (8, 2566506310), (10, 2053205048), (16, 1283253155), (20, 1026602524), (40, 513301262), (80, 256650631), (641, 32031280), (1282, 16015640), (2564, 8007820), (3205, 6406256), (5128, 4003910), (6410, 3203128), (10256, 2001955), (12820, 1601564), (25640, 800782), (51280, 400391)]