420945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 814080

約数和(自身を除く): 393135

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 211, 285, 399, 633, 665, 1055, 1477, 1995, 3165, 4009, 4431, 7385, 12027, 20045, 22155, 28063, 60135, 84189, 140315, 420945]

約数ペア:

[(1, 420945), (3, 140315), (5, 84189), (7, 60135), (15, 28063), (19, 22155), (21, 20045), (35, 12027), (57, 7385), (95, 4431), (105, 4009), (133, 3165), (211, 1995), (285, 1477), (399, 1055), (633, 665)]