19900934

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{4861}}^1$

素因数の和:4975

約数の個数: 16

約数和(自身を含む): 31505760

約数和(自身を除く): 11604826

約数列:

[1, 2, 23, 46, 89, 178, 2047, 4094, 4861, 9722, 111803, 223606, 432629, 865258, 9950467, 19900934]

約数ペア:

[(1, 19900934), (2, 9950467), (23, 865258), (46, 432629), (89, 223606), (178, 111803), (2047, 9722), (4094, 4861)]