20699553

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{13883}}^1$

素因数の和:13964

約数の個数: 16

約数和(自身を含む): 31988736

約数和(自身を除く): 11289183

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 13883, 41649, 97181, 291543, 985693, 2957079, 6899851, 20699553]

約数ペア:

[(1, 20699553), (3, 6899851), (7, 2957079), (21, 985693), (71, 291543), (213, 97181), (497, 41649), (1491, 13883)]