20195849840

素因数分解:

$2^4\times 5^1\times {\mathrm{1949}}^1\times {\mathrm{129527}}^1$

素因数の和:131489

約数の個数: 40

約数和(自身を含む): 46979805600

約数和(自身を除く): 26783955760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1949, 3898, 7796, 9745, 15592, 19490, 31184, 38980, 77960, 129527, 155920, 259054, 518108, 647635, 1036216, 1295270, 2072432, 2590540, 5181080, 10362160, 252448123, 504896246, 1009792492, 1262240615, 2019584984, 2524481230, 4039169968, 5048962460, 10097924920, 20195849840]

約数ペア:

[(1, 20195849840), (2, 10097924920), (4, 5048962460), (5, 4039169968), (8, 2524481230), (10, 2019584984), (16, 1262240615), (20, 1009792492), (40, 504896246), (80, 252448123), (1949, 10362160), (3898, 5181080), (7796, 2590540), (9745, 2072432), (15592, 1295270), (19490, 1036216), (31184, 647635), (38980, 518108), (77960, 259054), (129527, 155920)]