19975406

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{197}}^1\times {\mathrm{419}}^1$

素因数の和:640

約数の個数: 24

約数和(自身を含む): 33180840

約数和(自身を除く): 13205434

約数列:

[1, 2, 11, 22, 121, 197, 242, 394, 419, 838, 2167, 4334, 4609, 9218, 23837, 47674, 50699, 82543, 101398, 165086, 907973, 1815946, 9987703, 19975406]

約数ペア:

[(1, 19975406), (2, 9987703), (11, 1815946), (22, 907973), (121, 165086), (197, 101398), (242, 82543), (394, 50699), (419, 47674), (838, 23837), (2167, 9218), (4334, 4609)]