21410361

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19991}}^1$

素因数の和:20021

約数の個数: 24

約数和(自身を含む): 37425024

約数和(自身を除く): 16014663

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19991, 59973, 139937, 179919, 339847, 419811, 1019541, 1259433, 2378929, 3058623, 7136787, 21410361]

約数ペア:

[(1, 21410361), (3, 7136787), (7, 3058623), (9, 2378929), (17, 1259433), (21, 1019541), (51, 419811), (63, 339847), (119, 179919), (153, 139937), (357, 59973), (1071, 19991)]