20515095

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6421}}^1$

素因数の和:6503

約数の個数: 24

約数和(自身を含む): 36065952

約数和(自身を除く): 15550857

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 6421, 19263, 32105, 57789, 96315, 288945, 455891, 1367673, 2279455, 4103019, 6838365, 20515095]

約数ペア:

[(1, 20515095), (3, 6838365), (5, 4103019), (9, 2279455), (15, 1367673), (45, 455891), (71, 288945), (213, 96315), (355, 57789), (639, 32105), (1065, 19263), (3195, 6421)]