21361624

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{449}}^1$

素因数の和:787

約数の個数: 32

約数和(自身を含む): 42390000

約数和(自身を除く): 21028376

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 313, 449, 626, 898, 1252, 1796, 2504, 3592, 5947, 8531, 11894, 17062, 23788, 34124, 47576, 68248, 140537, 281074, 562148, 1124296, 2670203, 5340406, 10680812, 21361624]

約数ペア:

[(1, 21361624), (2, 10680812), (4, 5340406), (8, 2670203), (19, 1124296), (38, 562148), (76, 281074), (152, 140537), (313, 68248), (449, 47576), (626, 34124), (898, 23788), (1252, 17062), (1796, 11894), (2504, 8531), (3592, 5947)]