19810318

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{24337}}^1$

素因数の和:24387

約数の個数: 16

約数和(自身を含む): 33294384

約数和(自身を除く): 13484066

約数列:

[1, 2, 11, 22, 37, 74, 407, 814, 24337, 48674, 267707, 535414, 900469, 1800938, 9905159, 19810318]

約数ペア:

[(1, 19810318), (2, 9905159), (11, 1800938), (22, 900469), (37, 535414), (74, 267707), (407, 48674), (814, 24337)]