18857709

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{499}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 32760000

約数和(自身を除く): 13902291

約数列:

[1, 3, 9, 13, 17, 19, 39, 51, 57, 117, 153, 171, 221, 247, 323, 499, 663, 741, 969, 1497, 1989, 2223, 2907, 4199, 4491, 6487, 8483, 9481, 12597, 19461, 25449, 28443, 37791, 58383, 76347, 85329, 110279, 123253, 161177, 330837, 369759, 483531, 992511, 1109277, 1450593, 2095301, 6285903, 18857709]

約数ペア:

[(1, 18857709), (3, 6285903), (9, 2095301), (13, 1450593), (17, 1109277), (19, 992511), (39, 483531), (51, 369759), (57, 330837), (117, 161177), (153, 123253), (171, 110279), (221, 85329), (247, 76347), (323, 58383), (499, 37791), (663, 28443), (741, 25449), (969, 19461), (1497, 12597), (1989, 9481), (2223, 8483), (2907, 6487), (4199, 4491)]