28796180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2897}}^1$

素因数の和:2984

約数の個数: 48

約数和(自身を含む): 70108416

約数和(自身を除く): 41312236

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 2897, 4970, 5794, 9940, 11588, 14485, 20279, 28970, 40558, 57940, 81116, 101395, 202790, 205687, 405580, 411374, 822748, 1028435, 1439809, 2056870, 2879618, 4113740, 5759236, 7199045, 14398090, 28796180]

約数ペア:

[(1, 28796180), (2, 14398090), (4, 7199045), (5, 5759236), (7, 4113740), (10, 2879618), (14, 2056870), (20, 1439809), (28, 1028435), (35, 822748), (70, 411374), (71, 405580), (140, 205687), (142, 202790), (284, 101395), (355, 81116), (497, 57940), (710, 40558), (994, 28970), (1420, 20279), (1988, 14485), (2485, 11588), (2897, 9940), (4970, 5794)]