21421743

素因数分解:

$3^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{2423}}^1$

素因数の和:2854

約数の個数: 16

約数和(自身を含む): 32733696

約数和(自身を除く): 11311953

約数列:

[1, 3, 7, 21, 421, 1263, 2423, 2947, 7269, 8841, 16961, 50883, 1020083, 3060249, 7140581, 21421743]

約数ペア:

[(1, 21421743), (3, 7140581), (7, 3060249), (21, 1020083), (421, 50883), (1263, 16961), (2423, 8841), (2947, 7269)]