199901185

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{821}}^1$

素因数の和:1089

約数の個数: 32

約数和(自身を含む): 276981120

約数和(自身を除く): 77079935

約数列:

[1, 5, 11, 19, 55, 95, 209, 233, 821, 1045, 1165, 2563, 4105, 4427, 9031, 12815, 15599, 22135, 45155, 48697, 77995, 171589, 191293, 243485, 857945, 956465, 2104223, 3634567, 10521115, 18172835, 39980237, 199901185]

約数ペア:

[(1, 199901185), (5, 39980237), (11, 18172835), (19, 10521115), (55, 3634567), (95, 2104223), (209, 956465), (233, 857945), (821, 243485), (1045, 191293), (1165, 171589), (2563, 77995), (4105, 48697), (4427, 45155), (9031, 22135), (12815, 15599)]