213422

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:211

約数の個数: 16

約数和(自身を含む): 356400

約数和(自身を除く): 142978

約数列:

[1, 2, 11, 22, 89, 109, 178, 218, 979, 1199, 1958, 2398, 9701, 19402, 106711, 213422]

約数ペア:

[(1, 213422), (2, 106711), (11, 19402), (22, 9701), (89, 2398), (109, 1958), (178, 1199), (218, 979)]