19980459817

素因数分解:

${\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{307}}^1\times {\mathrm{433}}^1$

素因数の和:913

約数の個数: 32

約数和(自身を含む): 21366132480

約数和(自身を除く): 1385672663

約数列:

[1, 29, 71, 73, 307, 433, 2059, 2117, 5183, 8903, 12557, 21797, 22411, 30743, 31609, 132931, 150307, 632113, 649919, 891547, 916661, 1591181, 2244239, 3854999, 9438101, 9703963, 46144249, 65082931, 273704929, 281414927, 688981373, 19980459817]

約数ペア:

[(1, 19980459817), (29, 688981373), (71, 281414927), (73, 273704929), (307, 65082931), (433, 46144249), (2059, 9703963), (2117, 9438101), (5183, 3854999), (8903, 2244239), (12557, 1591181), (21797, 916661), (22411, 891547), (30743, 649919), (31609, 632113), (132931, 150307)]