28872860

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20333}}^1$

素因数の和:20413

約数の個数: 24

約数和(自身を含む): 61490016

約数和(自身を除く): 32617156

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 20333, 40666, 81332, 101665, 203330, 406660, 1443643, 2887286, 5774572, 7218215, 14436430, 28872860]

約数ペア:

[(1, 28872860), (2, 14436430), (4, 7218215), (5, 5774572), (10, 2887286), (20, 1443643), (71, 406660), (142, 203330), (284, 101665), (355, 81332), (710, 40666), (1420, 20333)]