21499868

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{463}}^1$

素因数の和:546

約数の個数: 48

約数和(自身を含む): 43653120

約数和(自身を除く): 22153252

約数列:

[1, 2, 4, 13, 19, 26, 38, 47, 52, 76, 94, 188, 247, 463, 494, 611, 893, 926, 988, 1222, 1786, 1852, 2444, 3572, 6019, 8797, 11609, 12038, 17594, 21761, 23218, 24076, 35188, 43522, 46436, 87044, 114361, 228722, 282893, 413459, 457444, 565786, 826918, 1131572, 1653836, 5374967, 10749934, 21499868]

約数ペア:

[(1, 21499868), (2, 10749934), (4, 5374967), (13, 1653836), (19, 1131572), (26, 826918), (38, 565786), (47, 457444), (52, 413459), (76, 282893), (94, 228722), (188, 114361), (247, 87044), (463, 46436), (494, 43522), (611, 35188), (893, 24076), (926, 23218), (988, 21761), (1222, 17594), (1786, 12038), (1852, 11609), (2444, 8797), (3572, 6019)]