21000688808

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{337}}^1\times {\mathrm{19139}}^1$

素因数の和:19530

約数の個数: 64

約数和(自身を含む): 44250148800

約数和(自身を除く): 23249459992

約数列:

[1, 2, 4, 8, 11, 22, 37, 44, 74, 88, 148, 296, 337, 407, 674, 814, 1348, 1628, 2696, 3256, 3707, 7414, 12469, 14828, 19139, 24938, 29656, 38278, 49876, 76556, 99752, 137159, 153112, 210529, 274318, 421058, 548636, 708143, 842116, 1097272, 1416286, 1684232, 2832572, 5665144, 6449843, 7789573, 12899686, 15579146, 25799372, 31158292, 51598744, 62316584, 70948273, 141896546, 238644191, 283793092, 477288382, 567586184, 954576764, 1909153528, 2625086101, 5250172202, 10500344404, 21000688808]

約数ペア:

[(1, 21000688808), (2, 10500344404), (4, 5250172202), (8, 2625086101), (11, 1909153528), (22, 954576764), (37, 567586184), (44, 477288382), (74, 283793092), (88, 238644191), (148, 141896546), (296, 70948273), (337, 62316584), (407, 51598744), (674, 31158292), (814, 25799372), (1348, 15579146), (1628, 12899686), (2696, 7789573), (3256, 6449843), (3707, 5665144), (7414, 2832572), (12469, 1684232), (14828, 1416286), (19139, 1097272), (24938, 842116), (29656, 708143), (38278, 548636), (49876, 421058), (76556, 274318), (99752, 210529), (137159, 153112)]