21285548

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 41126400

約数和(自身を除く): 19840852

約数列:

[1, 2, 4, 19, 38, 47, 59, 76, 94, 101, 118, 188, 202, 236, 404, 893, 1121, 1786, 1919, 2242, 2773, 3572, 3838, 4484, 4747, 5546, 5959, 7676, 9494, 11092, 11918, 18988, 23836, 52687, 90193, 105374, 113221, 180386, 210748, 226442, 280073, 360772, 452884, 560146, 1120292, 5321387, 10642774, 21285548]

約数ペア:

[(1, 21285548), (2, 10642774), (4, 5321387), (19, 1120292), (38, 560146), (47, 452884), (59, 360772), (76, 280073), (94, 226442), (101, 210748), (118, 180386), (188, 113221), (202, 105374), (236, 90193), (404, 52687), (893, 23836), (1121, 18988), (1786, 11918), (1919, 11092), (2242, 9494), (2773, 7676), (3572, 5959), (3838, 5546), (4484, 4747)]