19978709

素因数分解:

${\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{359}}^1$

素因数の和:508

約数の個数: 16

約数和(自身を含む): 22032000

約数和(自身を除く): 2053291

約数列:

[1, 19, 29, 101, 359, 551, 1919, 2929, 6821, 10411, 36259, 55651, 197809, 688921, 1051511, 19978709]

約数ペア:

[(1, 19978709), (19, 1051511), (29, 688921), (101, 197809), (359, 55651), (551, 36259), (1919, 10411), (2929, 6821)]