21466245

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1447}}^1$

素因数の和:1521

約数の個数: 32

約数和(自身を含む): 36698112

約数和(自身を除く): 15231867

約数列:

[1, 3, 5, 15, 23, 43, 69, 115, 129, 215, 345, 645, 989, 1447, 2967, 4341, 4945, 7235, 14835, 21705, 33281, 62221, 99843, 166405, 186663, 311105, 499215, 933315, 1431083, 4293249, 7155415, 21466245]

約数ペア:

[(1, 21466245), (3, 7155415), (5, 4293249), (15, 1431083), (23, 933315), (43, 499215), (69, 311105), (115, 186663), (129, 166405), (215, 99843), (345, 62221), (645, 33281), (989, 21705), (1447, 14835), (2967, 7235), (4341, 4945)]