19994390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{11831}}^1$

素因数の和:11864

約数の個数: 24

約数和(自身を含む): 38974608

約数和(自身を除く): 18980218

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 11831, 23662, 59155, 118310, 153803, 307606, 769015, 1538030, 1999439, 3998878, 9997195, 19994390]

約数ペア:

[(1, 19994390), (2, 9997195), (5, 3998878), (10, 1999439), (13, 1538030), (26, 769015), (65, 307606), (130, 153803), (169, 118310), (338, 59155), (845, 23662), (1690, 11831)]