81689398

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{307103}}^1$

素因数の和:307131

約数の個数: 16

約数和(自身を含む): 147409920

約数和(自身を除く): 65720522

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 307103, 614206, 2149721, 4299442, 5834957, 11669914, 40844699, 81689398]

約数ペア:

[(1, 81689398), (2, 40844699), (7, 11669914), (14, 5834957), (19, 4299442), (38, 2149721), (133, 614206), (266, 307103)]