21252130

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{16223}}^1$

素因数の和:16361

約数の個数: 16

約数和(自身を含む): 38548224

約数和(自身を除く): 17296094

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 16223, 32446, 81115, 162230, 2125213, 4250426, 10626065, 21252130]

約数ペア:

[(1, 21252130), (2, 10626065), (5, 4250426), (10, 2125213), (131, 162230), (262, 81115), (655, 32446), (1310, 16223)]