808778890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{10111}}^1$

素因数の和:10558

約数の個数: 32

約数和(自身を含む): 1536215040

約数和(自身を除く): 727436150

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 421, 842, 2105, 4210, 7999, 10111, 15998, 20222, 39995, 50555, 79990, 101110, 192109, 384218, 960545, 1921090, 4256731, 8513462, 21283655, 42567310, 80877889, 161755778, 404389445, 808778890]

約数ペア:

[(1, 808778890), (2, 404389445), (5, 161755778), (10, 80877889), (19, 42567310), (38, 21283655), (95, 8513462), (190, 4256731), (421, 1921090), (842, 960545), (2105, 384218), (4210, 192109), (7999, 101110), (10111, 79990), (15998, 50555), (20222, 39995)]