81895681

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1249}}^1$

素因数の和:1321

約数の個数: 32

約数和(自身を含む): 108000000

約数和(自身を除く): 26104319

約数列:

[1, 7, 17, 19, 29, 119, 133, 203, 323, 493, 551, 1249, 2261, 3451, 3857, 8743, 9367, 21233, 23731, 36221, 65569, 148631, 166117, 253547, 403427, 615757, 688199, 2823989, 4310299, 4817393, 11699383, 81895681]

約数ペア:

[(1, 81895681), (7, 11699383), (17, 4817393), (19, 4310299), (29, 2823989), (119, 688199), (133, 615757), (203, 403427), (323, 253547), (493, 166117), (551, 148631), (1249, 65569), (2261, 36221), (3451, 23731), (3857, 21233), (8743, 9367)]