20531121

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{179}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 31570560

約数和(自身を除く): 11039439

約数列:

[1, 3, 13, 17, 39, 51, 173, 179, 221, 519, 537, 663, 2249, 2327, 2941, 3043, 6747, 6981, 8823, 9129, 30967, 38233, 39559, 92901, 114699, 118677, 402571, 526439, 1207713, 1579317, 6843707, 20531121]

約数ペア:

[(1, 20531121), (3, 6843707), (13, 1579317), (17, 1207713), (39, 526439), (51, 402571), (173, 118677), (179, 114699), (221, 92901), (519, 39559), (537, 38233), (663, 30967), (2249, 9129), (2327, 8823), (2941, 6981), (3043, 6747)]