19857831

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{317}}^1$

素因数の和:503

約数の個数: 32

約数和(自身を含む): 32156160

約数和(自身を除く): 12298329

約数列:

[1, 3, 7, 19, 21, 57, 133, 157, 317, 399, 471, 951, 1099, 2219, 2983, 3297, 6023, 6657, 8949, 18069, 20881, 42161, 49769, 62643, 126483, 149307, 348383, 945611, 1045149, 2836833, 6619277, 19857831]

約数ペア:

[(1, 19857831), (3, 6619277), (7, 2836833), (19, 1045149), (21, 945611), (57, 348383), (133, 149307), (157, 126483), (317, 62643), (399, 49769), (471, 42161), (951, 20881), (1099, 18069), (2219, 8949), (2983, 6657), (3297, 6023)]