21871635

素因数分解:

$3^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{5189}}^1$

素因数の和:5478

約数の個数: 16

約数和(自身を含む): 35125920

約数和(自身を除く): 13254285

約数列:

[1, 3, 5, 15, 281, 843, 1405, 4215, 5189, 15567, 25945, 77835, 1458109, 4374327, 7290545, 21871635]

約数ペア:

[(1, 21871635), (3, 7290545), (5, 4374327), (15, 1458109), (281, 77835), (843, 25945), (1405, 15567), (4215, 5189)]