28784440

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{9109}}^1$

素因数の和:9199

約数の個数: 32

約数和(自身を含む): 65592000

約数和(自身を除く): 36807560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 9109, 18218, 36436, 45545, 72872, 91090, 182180, 364360, 719611, 1439222, 2878444, 3598055, 5756888, 7196110, 14392220, 28784440]

約数ペア:

[(1, 28784440), (2, 14392220), (4, 7196110), (5, 5756888), (8, 3598055), (10, 2878444), (20, 1439222), (40, 719611), (79, 364360), (158, 182180), (316, 91090), (395, 72872), (632, 45545), (790, 36436), (1580, 18218), (3160, 9109)]