25221189

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{63211}}^1$

素因数の和:63240

約数の個数: 16

約数和(自身を含む): 40455680

約数和(自身を除く): 15234491

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 63211, 189633, 442477, 1201009, 1327431, 3603027, 8407063, 25221189]

約数ペア:

[(1, 25221189), (3, 8407063), (7, 3603027), (19, 1327431), (21, 1201009), (57, 442477), (133, 189633), (399, 63211)]