20685123

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{619}}^1$

素因数の和:751

約数の個数: 24

約数和(自身を含む): 30950400

約数和(自身を除く): 10265277

約数列:

[1, 3, 9, 47, 79, 141, 237, 423, 619, 711, 1857, 3713, 5571, 11139, 29093, 33417, 48901, 87279, 146703, 261837, 440109, 2298347, 6895041, 20685123]

約数ペア:

[(1, 20685123), (3, 6895041), (9, 2298347), (47, 440109), (79, 261837), (141, 146703), (237, 87279), (423, 48901), (619, 33417), (711, 29093), (1857, 11139), (3713, 5571)]