21513814

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2609}}^1$

素因数の和:2668

約数の個数: 32

約数和(自身を含む): 40089600

約数和(自身を除く): 18575786

約数列:

[1, 2, 7, 14, 19, 31, 38, 62, 133, 217, 266, 434, 589, 1178, 2609, 4123, 5218, 8246, 18263, 36526, 49571, 80879, 99142, 161758, 346997, 566153, 693994, 1132306, 1536701, 3073402, 10756907, 21513814]

約数ペア:

[(1, 21513814), (2, 10756907), (7, 3073402), (14, 1536701), (19, 1132306), (31, 693994), (38, 566153), (62, 346997), (133, 161758), (217, 99142), (266, 80879), (434, 49571), (589, 36526), (1178, 18263), (2609, 8246), (4123, 5218)]