18941945

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{131}}^1\times {\mathrm{239}}^1$

素因数の和:397

約数の個数: 24

約数和(自身を含む): 25280640

約数和(自身を除く): 6338695

約数列:

[1, 5, 11, 55, 121, 131, 239, 605, 655, 1195, 1441, 2629, 7205, 13145, 15851, 28919, 31309, 79255, 144595, 156545, 344399, 1721995, 3788389, 18941945]

約数ペア:

[(1, 18941945), (5, 3788389), (11, 1721995), (55, 344399), (121, 156545), (131, 144595), (239, 79255), (605, 31309), (655, 28919), (1195, 15851), (1441, 13145), (2629, 7205)]