19940245

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{2207}}^1$

素因数の和:2364

約数の個数: 16

約数和(自身を含む): 25966080

約数和(自身を除く): 6025835

約数列:

[1, 5, 13, 65, 139, 695, 1807, 2207, 9035, 11035, 28691, 143455, 306773, 1533865, 3988049, 19940245]

約数ペア:

[(1, 19940245), (5, 3988049), (13, 1533865), (65, 306773), (139, 143455), (695, 28691), (1807, 11035), (2207, 9035)]