28888840

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1483}}^1$

素因数の和:1981

約数の個数: 32

約数和(自身を含む): 65177280

約数和(自身を除く): 36288440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1483, 1948, 2435, 2966, 3896, 4870, 5932, 7415, 9740, 11864, 14830, 19480, 29660, 59320, 722221, 1444442, 2888884, 3611105, 5777768, 7222210, 14444420, 28888840]

約数ペア:

[(1, 28888840), (2, 14444420), (4, 7222210), (5, 5777768), (8, 3611105), (10, 2888884), (20, 1444442), (40, 722221), (487, 59320), (974, 29660), (1483, 19480), (1948, 14830), (2435, 11864), (2966, 9740), (3896, 7415), (4870, 5932)]