18420843

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{51599}}^1$

素因数の和:51626

約数の個数: 16

約数和(自身を含む): 29721600

約数和(自身を除く): 11300757

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 51599, 154797, 361193, 877183, 1083579, 2631549, 6140281, 18420843]

約数ペア:

[(1, 18420843), (3, 6140281), (7, 2631549), (17, 1083579), (21, 877183), (51, 361193), (119, 154797), (357, 51599)]