19902116

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{499}}^1$

素因数の和:588

約数の個数: 36

約数和(自身を含む): 38430000

約数和(自身を除く): 18527884

約数列:

[1, 2, 4, 13, 26, 52, 59, 118, 169, 236, 338, 499, 676, 767, 998, 1534, 1996, 3068, 6487, 9971, 12974, 19942, 25948, 29441, 39884, 58882, 84331, 117764, 168662, 337324, 382733, 765466, 1530932, 4975529, 9951058, 19902116]

約数ペア:

[(1, 19902116), (2, 9951058), (4, 4975529), (13, 1530932), (26, 765466), (52, 382733), (59, 337324), (118, 168662), (169, 117764), (236, 84331), (338, 58882), (499, 39884), (676, 29441), (767, 25948), (998, 19942), (1534, 12974), (1996, 9971), (3068, 6487)]