21508688

素因数分解:

$2^4\times {\mathrm{337}}^1\times {\mathrm{3989}}^1$

素因数の和:4334

約数の個数: 20

約数和(自身を含む): 41807220

約数和(自身を除く): 20298532

約数列:

[1, 2, 4, 8, 16, 337, 674, 1348, 2696, 3989, 5392, 7978, 15956, 31912, 63824, 1344293, 2688586, 5377172, 10754344, 21508688]

約数ペア:

[(1, 21508688), (2, 10754344), (4, 5377172), (8, 2688586), (16, 1344293), (337, 63824), (674, 31912), (1348, 15956), (2696, 7978), (3989, 5392)]