21107404

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^2$

素因数の和:119

約数の個数: 54

約数和(自身を含む): 42679140

約数和(自身を除く): 21571736

約数列:

[1, 2, 4, 17, 19, 31, 34, 38, 62, 68, 76, 124, 289, 323, 527, 578, 589, 646, 961, 1054, 1156, 1178, 1292, 1922, 2108, 2356, 3844, 5491, 8959, 10013, 10982, 16337, 17918, 18259, 20026, 21964, 32674, 35836, 36518, 40052, 65348, 73036, 170221, 277729, 310403, 340442, 555458, 620806, 680884, 1110916, 1241612, 5276851, 10553702, 21107404]

約数ペア:

[(1, 21107404), (2, 10553702), (4, 5276851), (17, 1241612), (19, 1110916), (31, 680884), (34, 620806), (38, 555458), (62, 340442), (68, 310403), (76, 277729), (124, 170221), (289, 73036), (323, 65348), (527, 40052), (578, 36518), (589, 35836), (646, 32674), (961, 21964), (1054, 20026), (1156, 18259), (1178, 17918), (1292, 16337), (1922, 10982), (2108, 10013), (2356, 8959), (3844, 5491)]