221511255

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{5011}}^1$

素因数の和:5447

約数の個数: 32

約数和(自身を含む): 406092288

約数和(自身を除く): 184581033

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 421, 1263, 2105, 2947, 5011, 6315, 8841, 14735, 15033, 25055, 35077, 44205, 75165, 105231, 175385, 526155, 2109631, 6328893, 10548155, 14767417, 31644465, 44302251, 73837085, 221511255]

約数ペア:

[(1, 221511255), (3, 73837085), (5, 44302251), (7, 31644465), (15, 14767417), (21, 10548155), (35, 6328893), (105, 2109631), (421, 526155), (1263, 175385), (2105, 105231), (2947, 75165), (5011, 44205), (6315, 35077), (8841, 25055), (14735, 15033)]