21708435

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:228

約数の個数: 64

約数和(自身を含む): 42301440

約数和(自身を除く): 20593005

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 89, 101, 105, 115, 161, 267, 303, 345, 445, 483, 505, 623, 707, 805, 1335, 1515, 1869, 2047, 2121, 2323, 2415, 3115, 3535, 6141, 6969, 8989, 9345, 10235, 10605, 11615, 14329, 16261, 26967, 30705, 34845, 42987, 44945, 48783, 62923, 71645, 81305, 134835, 188769, 206747, 214935, 243915, 314615, 620241, 943845, 1033735, 1447229, 3101205, 4341687, 7236145, 21708435]

約数ペア:

[(1, 21708435), (3, 7236145), (5, 4341687), (7, 3101205), (15, 1447229), (21, 1033735), (23, 943845), (35, 620241), (69, 314615), (89, 243915), (101, 214935), (105, 206747), (115, 188769), (161, 134835), (267, 81305), (303, 71645), (345, 62923), (445, 48783), (483, 44945), (505, 42987), (623, 34845), (707, 30705), (805, 26967), (1335, 16261), (1515, 14329), (1869, 11615), (2047, 10605), (2121, 10235), (2323, 9345), (2415, 8989), (3115, 6969), (3535, 6141)]