18910983

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1307}}^1$

素因数の和:1383

約数の個数: 32

約数和(自身を含む): 31643136

約数和(自身を除く): 12732153

約数列:

[1, 3, 7, 13, 21, 39, 53, 91, 159, 273, 371, 689, 1113, 1307, 2067, 3921, 4823, 9149, 14469, 16991, 27447, 50973, 69271, 118937, 207813, 356811, 484897, 900523, 1454691, 2701569, 6303661, 18910983]

約数ペア:

[(1, 18910983), (3, 6303661), (7, 2701569), (13, 1454691), (21, 900523), (39, 484897), (53, 356811), (91, 207813), (159, 118937), (273, 69271), (371, 50973), (689, 27447), (1113, 16991), (1307, 14469), (2067, 9149), (3921, 4823)]