19900412

素因数分解:

$2^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{8563}}^1$

素因数の和:8657

約数の個数: 24

約数和(自身を含む): 40285056

約数和(自身を除く): 20384644

約数列:

[1, 2, 4, 7, 14, 28, 83, 166, 332, 581, 1162, 2324, 8563, 17126, 34252, 59941, 119882, 239764, 710729, 1421458, 2842916, 4975103, 9950206, 19900412]

約数ペア:

[(1, 19900412), (2, 9950206), (4, 4975103), (7, 2842916), (14, 1421458), (28, 710729), (83, 239764), (166, 119882), (332, 59941), (581, 34252), (1162, 17126), (2324, 8563)]