20308379

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 27009024

約数和(自身を除く): 6700645

約数列:

[1, 7, 13, 23, 31, 91, 161, 217, 299, 313, 403, 713, 2093, 2191, 2821, 4069, 4991, 7199, 9269, 9703, 28483, 50393, 64883, 67921, 93587, 126139, 223169, 655109, 882973, 1562183, 2901197, 20308379]

約数ペア:

[(1, 20308379), (7, 2901197), (13, 1562183), (23, 882973), (31, 655109), (91, 223169), (161, 126139), (217, 93587), (299, 67921), (313, 64883), (403, 50393), (713, 28483), (2093, 9703), (2191, 9269), (2821, 7199), (4069, 4991)]