20851778

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{571}}^1$

素因数の和:654

約数の個数: 24

約数和(自身を含む): 34079760

約数和(自身を除く): 13227982

約数列:

[1, 2, 19, 31, 38, 62, 571, 589, 961, 1142, 1178, 1922, 10849, 17701, 18259, 21698, 35402, 36518, 336319, 548731, 672638, 1097462, 10425889, 20851778]

約数ペア:

[(1, 20851778), (2, 10425889), (19, 1097462), (31, 672638), (38, 548731), (62, 336319), (571, 36518), (589, 35402), (961, 21698), (1142, 18259), (1178, 17701), (1922, 10849)]