28431381

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{797}}^1$

素因数の和:881

約数の個数: 32

約数和(自身を含む): 44126208

約数和(自身を除く): 15694827

約数列:

[1, 3, 11, 23, 33, 47, 69, 141, 253, 517, 759, 797, 1081, 1551, 2391, 3243, 8767, 11891, 18331, 26301, 35673, 37459, 54993, 112377, 201641, 412049, 604923, 861557, 1236147, 2584671, 9477127, 28431381]

約数ペア:

[(1, 28431381), (3, 9477127), (11, 2584671), (23, 1236147), (33, 861557), (47, 604923), (69, 412049), (141, 201641), (253, 112377), (517, 54993), (759, 37459), (797, 35673), (1081, 26301), (1551, 18331), (2391, 11891), (3243, 8767)]