209891858

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{221873}}^1$

素因数の和:221929

約数の個数: 16

約数和(自身を含む): 351448416

約数和(自身を除く): 141556558

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 221873, 443746, 2440603, 4881206, 9540539, 19081078, 104945929, 209891858]

約数ペア:

[(1, 209891858), (2, 104945929), (11, 19081078), (22, 9540539), (43, 4881206), (86, 2440603), (473, 443746), (946, 221873)]