21357133

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{1217}}^1$

素因数の和:1356

約数の個数: 16

約数和(自身を含む): 25724160

約数和(自身を除く): 4367027

約数列:

[1, 7, 23, 109, 161, 763, 1217, 2507, 8519, 17549, 27991, 132653, 195937, 928571, 3051019, 21357133]

約数ペア:

[(1, 21357133), (7, 3051019), (23, 928571), (109, 195937), (161, 132653), (763, 27991), (1217, 17549), (2507, 8519)]