21155378

素因数分解:

$2^1\times {\mathrm{17}}^3\times {\mathrm{2153}}^1$

素因数の和:2206

約数の個数: 16

約数和(自身を含む): 33731640

約数和(自身を除く): 12576262

約数列:

[1, 2, 17, 34, 289, 578, 2153, 4306, 4913, 9826, 36601, 73202, 622217, 1244434, 10577689, 21155378]

約数ペア:

[(1, 21155378), (2, 10577689), (17, 1244434), (34, 622217), (289, 73202), (578, 36601), (2153, 9826), (4306, 4913)]