280159745

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1\times {\mathrm{389}}^1$

素因数の和:677

約数の個数: 32

約数和(自身を含む): 368128800

約数和(自身を除く): 87969055

約数列:

[1, 5, 17, 37, 85, 185, 229, 389, 629, 1145, 1945, 3145, 3893, 6613, 8473, 14393, 19465, 33065, 42365, 71965, 89081, 144041, 244681, 445405, 720205, 1223405, 1514377, 3295997, 7571885, 16479985, 56031949, 280159745]

約数ペア:

[(1, 280159745), (5, 56031949), (17, 16479985), (37, 7571885), (85, 3295997), (185, 1514377), (229, 1223405), (389, 720205), (629, 445405), (1145, 244681), (1945, 144041), (3145, 89081), (3893, 71965), (6613, 42365), (8473, 33065), (14393, 19465)]