20193906940

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1223}}^1\times {\mathrm{1249}}^1$

素因数の和:3142

約数の個数: 48

約数和(自身を含む): 42540120000

約数和(自身を除く): 22346213060

約数列:

[1, 2, 4, 5, 10, 20, 661, 1223, 1249, 1322, 2446, 2498, 2644, 3305, 4892, 4996, 6115, 6245, 6610, 12230, 12490, 13220, 24460, 24980, 808403, 825589, 1527527, 1616806, 1651178, 3055054, 3233612, 3302356, 4042015, 4127945, 6110108, 7637635, 8084030, 8255890, 15275270, 16168060, 16511780, 30550540, 1009695347, 2019390694, 4038781388, 5048476735, 10096953470, 20193906940]

約数ペア:

[(1, 20193906940), (2, 10096953470), (4, 5048476735), (5, 4038781388), (10, 2019390694), (20, 1009695347), (661, 30550540), (1223, 16511780), (1249, 16168060), (1322, 15275270), (2446, 8255890), (2498, 8084030), (2644, 7637635), (3305, 6110108), (4892, 4127945), (4996, 4042015), (6115, 3302356), (6245, 3233612), (6610, 3055054), (12230, 1651178), (12490, 1616806), (13220, 1527527), (24460, 825589), (24980, 808403)]