20212828

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{199}}^1\times {\mathrm{379}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 36176000

約数和(自身を除く): 15963172

約数列:

[1, 2, 4, 67, 134, 199, 268, 379, 398, 758, 796, 1516, 13333, 25393, 26666, 50786, 53332, 75421, 101572, 150842, 301684, 5053207, 10106414, 20212828]

約数ペア:

[(1, 20212828), (2, 10106414), (4, 5053207), (67, 301684), (134, 150842), (199, 101572), (268, 75421), (379, 53332), (398, 50786), (758, 26666), (796, 25393), (1516, 13333)]