20847345

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{419}}^1$

素因数の和:565

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 13989135

約数列:

[1, 3, 5, 15, 31, 93, 107, 155, 321, 419, 465, 535, 1257, 1605, 2095, 3317, 6285, 9951, 12989, 16585, 38967, 44833, 49755, 64945, 134499, 194835, 224165, 672495, 1389823, 4169469, 6949115, 20847345]

約数ペア:

[(1, 20847345), (3, 6949115), (5, 4169469), (15, 1389823), (31, 672495), (93, 224165), (107, 194835), (155, 134499), (321, 64945), (419, 49755), (465, 44833), (535, 38967), (1257, 16585), (1605, 12989), (2095, 9951), (3317, 6285)]