21145604

素因数分解:

$2^2\times {\mathrm{331}}^1\times {\mathrm{15971}}^1$

素因数の和:16306

約数の個数: 12

約数和(自身を含む): 37118928

約数和(自身を除く): 15973324

約数列:

[1, 2, 4, 331, 662, 1324, 15971, 31942, 63884, 5286401, 10572802, 21145604]

約数ペア:

[(1, 21145604), (2, 10572802), (4, 5286401), (331, 63884), (662, 31942), (1324, 15971)]