13201215

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{211}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 21939456

約数和(自身を除く): 8738241

約数列:

[1, 3, 5, 15, 43, 97, 129, 211, 215, 291, 485, 633, 645, 1055, 1455, 3165, 4171, 9073, 12513, 20467, 20855, 27219, 45365, 61401, 62565, 102335, 136095, 307005, 880081, 2640243, 4400405, 13201215]

約数ペア:

[(1, 13201215), (3, 4400405), (5, 2640243), (15, 880081), (43, 307005), (97, 136095), (129, 102335), (211, 62565), (215, 61401), (291, 45365), (485, 27219), (633, 20855), (645, 20467), (1055, 12513), (1455, 9073), (3165, 4171)]