19977839

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{827}}^1$

素因数の和:887

約数の個数: 24

約数和(自身を含む): 25485840

約数和(自身を除く): 5508001

約数列:

[1, 7, 17, 29, 49, 119, 203, 493, 827, 833, 1421, 3451, 5789, 14059, 23983, 24157, 40523, 98413, 167881, 407711, 688891, 1175167, 2853977, 19977839]

約数ペア:

[(1, 19977839), (7, 2853977), (17, 1175167), (29, 688891), (49, 407711), (119, 167881), (203, 98413), (493, 40523), (827, 24157), (833, 23983), (1421, 14059), (3451, 5789)]