388487740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{643}}^1\times {\mathrm{1777}}^1$

素因数の和:2446

約数の個数: 48

約数和(自身を含む): 865644192

約数和(自身を除く): 477156452

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 643, 1286, 1777, 2572, 3215, 3554, 6430, 7108, 8885, 10931, 12860, 17770, 21862, 30209, 35540, 43724, 54655, 60418, 109310, 120836, 151045, 218620, 302090, 604180, 1142611, 2285222, 4570444, 5713055, 11426110, 19424387, 22852220, 38848774, 77697548, 97121935, 194243870, 388487740]

約数ペア:

[(1, 388487740), (2, 194243870), (4, 97121935), (5, 77697548), (10, 38848774), (17, 22852220), (20, 19424387), (34, 11426110), (68, 5713055), (85, 4570444), (170, 2285222), (340, 1142611), (643, 604180), (1286, 302090), (1777, 218620), (2572, 151045), (3215, 120836), (3554, 109310), (6430, 60418), (7108, 54655), (8885, 43724), (10931, 35540), (12860, 30209), (17770, 21862)]