20009781

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{757}}^1$

素因数の和:866

約数の個数: 32

約数和(自身を含む): 32745600

約数和(自身を除く): 12735819

約数列:

[1, 3, 9, 11, 27, 33, 89, 99, 267, 297, 757, 801, 979, 2271, 2403, 2937, 6813, 8327, 8811, 20439, 24981, 26433, 67373, 74943, 202119, 224829, 606357, 741103, 1819071, 2223309, 6669927, 20009781]

約数ペア:

[(1, 20009781), (3, 6669927), (9, 2223309), (11, 1819071), (27, 741103), (33, 606357), (89, 224829), (99, 202119), (267, 74943), (297, 67373), (757, 26433), (801, 24981), (979, 20439), (2271, 8811), (2403, 8327), (2937, 6813)]