20993973

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{6991}}^1$

素因数の和:7025

約数の個数: 32

約数和(自身を含む): 37588992

約数和(自身を除く): 16595019

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 143, 231, 273, 429, 1001, 3003, 6991, 20973, 48937, 76901, 90883, 146811, 230703, 272649, 538307, 636181, 999713, 1614921, 1908543, 2999139, 6997991, 20993973]

約数ペア:

[(1, 20993973), (3, 6997991), (7, 2999139), (11, 1908543), (13, 1614921), (21, 999713), (33, 636181), (39, 538307), (77, 272649), (91, 230703), (143, 146811), (231, 90883), (273, 76901), (429, 48937), (1001, 20973), (3003, 6991)]