209499460

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{197641}}^1$

素因数の和:197703

約数の個数: 24

約数和(自身を含む): 448252056

約数和(自身を除く): 238752596

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 197641, 395282, 790564, 988205, 1976410, 3952820, 10474973, 20949946, 41899892, 52374865, 104749730, 209499460]

約数ペア:

[(1, 209499460), (2, 104749730), (4, 52374865), (5, 41899892), (10, 20949946), (20, 10474973), (53, 3952820), (106, 1976410), (212, 988205), (265, 790564), (530, 395282), (1060, 197641)]