890999091

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{521}}^1$

素因数の和:756

約数の個数: 48

約数和(自身を含む): 1385972640

約数和(自身を除く): 494973549

約数列:

[1, 3, 9, 19, 57, 73, 137, 171, 219, 411, 521, 657, 1233, 1387, 1563, 2603, 4161, 4689, 7809, 9899, 10001, 12483, 23427, 29697, 30003, 38033, 71377, 89091, 90009, 114099, 190019, 214131, 342297, 570057, 642393, 722627, 1356163, 1710171, 2167881, 4068489, 5210521, 6503643, 12205467, 15631563, 46894689, 98999899, 296999697, 890999091]

約数ペア:

[(1, 890999091), (3, 296999697), (9, 98999899), (19, 46894689), (57, 15631563), (73, 12205467), (137, 6503643), (171, 5210521), (219, 4068489), (411, 2167881), (521, 1710171), (657, 1356163), (1233, 722627), (1387, 642393), (1563, 570057), (2603, 342297), (4161, 214131), (4689, 190019), (7809, 114099), (9899, 90009), (10001, 89091), (12483, 71377), (23427, 38033), (29697, 30003)]