18981703

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:167

約数の個数: 32

約数和(自身を含む): 23152640

約数和(自身を除く): 4170937

約数列:

[1, 13, 19, 31, 37, 67, 247, 403, 481, 589, 703, 871, 1147, 1273, 2077, 2479, 7657, 9139, 14911, 16549, 21793, 27001, 32227, 39463, 47101, 76849, 283309, 513019, 612313, 999037, 1460131, 18981703]

約数ペア:

[(1, 18981703), (13, 1460131), (19, 999037), (31, 612313), (37, 513019), (67, 283309), (247, 76849), (403, 47101), (481, 39463), (589, 32227), (703, 27001), (871, 21793), (1147, 16549), (1273, 14911), (2077, 9139), (2479, 7657)]