19870018

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{439}}^1$

素因数の和:562

約数の個数: 32

約数和(自身を含む): 35354880

約数和(自身を除く): 15484862

約数列:

[1, 2, 7, 14, 53, 61, 106, 122, 371, 427, 439, 742, 854, 878, 3073, 3233, 6146, 6466, 22631, 23267, 26779, 45262, 46534, 53558, 162869, 187453, 325738, 374906, 1419287, 2838574, 9935009, 19870018]

約数ペア:

[(1, 19870018), (2, 9935009), (7, 2838574), (14, 1419287), (53, 374906), (61, 325738), (106, 187453), (122, 162869), (371, 53558), (427, 46534), (439, 45262), (742, 26779), (854, 23267), (878, 22631), (3073, 6466), (3233, 6146)]