20731204

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20983}}^1$

素因数の和:21019

約数の個数: 24

約数和(自身を含む): 41128640

約数和(自身を除く): 20397436

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988, 20983, 41966, 83932, 272779, 398677, 545558, 797354, 1091116, 1594708, 5182801, 10365602, 20731204]

約数ペア:

[(1, 20731204), (2, 10365602), (4, 5182801), (13, 1594708), (19, 1091116), (26, 797354), (38, 545558), (52, 398677), (76, 272779), (247, 83932), (494, 41966), (988, 20983)]