247654820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{252709}}^1$

素因数の和:252732

約数の個数: 36

約数和(自身を含む): 604987740

約数和(自身を除く): 357332920

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 252709, 505418, 1010836, 1263545, 1768963, 2527090, 3537926, 5054180, 7075852, 8844815, 12382741, 17689630, 24765482, 35379260, 49530964, 61913705, 123827410, 247654820]

約数ペア:

[(1, 247654820), (2, 123827410), (4, 61913705), (5, 49530964), (7, 35379260), (10, 24765482), (14, 17689630), (20, 12382741), (28, 8844815), (35, 7075852), (49, 5054180), (70, 3537926), (98, 2527090), (140, 1768963), (196, 1263545), (245, 1010836), (490, 505418), (980, 252709)]