20520357

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1543}}^1$

素因数の和:1601

約数の個数: 32

約数和(自身を含む): 33202176

約数和(自身を除く): 12681819

約数列:

[1, 3, 11, 13, 31, 33, 39, 93, 143, 341, 403, 429, 1023, 1209, 1543, 4433, 4629, 13299, 16973, 20059, 47833, 50919, 60177, 143499, 220649, 526163, 621829, 661947, 1578489, 1865487, 6840119, 20520357]

約数ペア:

[(1, 20520357), (3, 6840119), (11, 1865487), (13, 1578489), (31, 661947), (33, 621829), (39, 526163), (93, 220649), (143, 143499), (341, 60177), (403, 50919), (429, 47833), (1023, 20059), (1209, 16973), (1543, 13299), (4433, 4629)]