18694879

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 24076800

約数和(自身を除く): 5381921

約数列:

[1, 7, 19, 29, 37, 131, 133, 203, 259, 551, 703, 917, 1073, 2489, 3799, 3857, 4847, 4921, 7511, 17423, 20387, 26593, 33929, 72181, 92093, 140563, 142709, 505267, 644651, 983941, 2670697, 18694879]

約数ペア:

[(1, 18694879), (7, 2670697), (19, 983941), (29, 644651), (37, 505267), (131, 142709), (133, 140563), (203, 92093), (259, 72181), (551, 33929), (703, 26593), (917, 20387), (1073, 17423), (2489, 7511), (3799, 4921), (3857, 4847)]