18991516

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{367}}^1\times {\mathrm{761}}^1$

素因数の和:1149

約数の個数: 24

約数和(自身を含む): 35332416

約数和(自身を除く): 16340900

約数列:

[1, 2, 4, 17, 34, 68, 367, 734, 761, 1468, 1522, 3044, 6239, 12478, 12937, 24956, 25874, 51748, 279287, 558574, 1117148, 4747879, 9495758, 18991516]

約数ペア:

[(1, 18991516), (2, 9495758), (4, 4747879), (17, 1117148), (34, 558574), (68, 279287), (367, 51748), (734, 25874), (761, 24956), (1468, 12937), (1522, 12478), (3044, 6239)]