20806561647

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{5869}}^1$

素因数の和:5985

約数の個数: 72

約数和(自身を含む): 33735124800

約数和(自身を除く): 12928563153

約数列:

[1, 3, 9, 17, 29, 47, 51, 87, 141, 153, 261, 289, 423, 493, 799, 867, 1363, 1479, 2397, 2601, 4089, 4437, 5869, 7191, 8381, 12267, 13583, 17607, 23171, 25143, 40749, 52821, 69513, 75429, 99773, 122247, 170201, 208539, 275843, 299319, 393907, 510603, 827529, 897957, 1181721, 1531809, 1696141, 2482587, 2893417, 3545163, 4689331, 5088423, 7999447, 8680251, 14067993, 15265269, 23998341, 26040753, 42203979, 49188089, 71995023, 79718627, 135990599, 147564267, 239155881, 407971797, 442692801, 717467643, 1223915391, 2311840183, 6935520549, 20806561647]

約数ペア:

[(1, 20806561647), (3, 6935520549), (9, 2311840183), (17, 1223915391), (29, 717467643), (47, 442692801), (51, 407971797), (87, 239155881), (141, 147564267), (153, 135990599), (261, 79718627), (289, 71995023), (423, 49188089), (493, 42203979), (799, 26040753), (867, 23998341), (1363, 15265269), (1479, 14067993), (2397, 8680251), (2601, 7999447), (4089, 5088423), (4437, 4689331), (5869, 3545163), (7191, 2893417), (8381, 2482587), (12267, 1696141), (13583, 1531809), (17607, 1181721), (23171, 897957), (25143, 827529), (40749, 510603), (52821, 393907), (69513, 299319), (75429, 275843), (99773, 208539), (122247, 170201)]