20793880

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{5147}}^1$

素因数の和:5259

約数の個数: 32

約数和(自身を含む): 47258640

約数和(自身を除く): 26464760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 5147, 10294, 20588, 25735, 41176, 51470, 102940, 205880, 519847, 1039694, 2079388, 2599235, 4158776, 5198470, 10396940, 20793880]

約数ペア:

[(1, 20793880), (2, 10396940), (4, 5198470), (5, 4158776), (8, 2599235), (10, 2079388), (20, 1039694), (40, 519847), (101, 205880), (202, 102940), (404, 51470), (505, 41176), (808, 25735), (1010, 20588), (2020, 10294), (4040, 5147)]