21000383992

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{19737203}}^1$

素因数の和:19737235

約数の個数: 32

約数和(自身を含む): 47369289600

約数和(自身を除く): 26368905608

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 19737203, 39474406, 78948812, 138160421, 157897624, 276320842, 375006857, 552641684, 750013714, 1105283368, 1500027428, 2625047999, 3000054856, 5250095998, 10500191996, 21000383992]

約数ペア:

[(1, 21000383992), (2, 10500191996), (4, 5250095998), (7, 3000054856), (8, 2625047999), (14, 1500027428), (19, 1105283368), (28, 750013714), (38, 552641684), (56, 375006857), (76, 276320842), (133, 157897624), (152, 138160421), (266, 78948812), (532, 39474406), (1064, 19737203)]