261995001

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1\times {\mathrm{389}}^1$

素因数の和:685

約数の個数: 32

約数和(自身を含む): 375598080

約数和(自身を除く): 113603079

約数列:

[1, 3, 23, 43, 69, 129, 227, 389, 681, 989, 1167, 2967, 5221, 8947, 9761, 15663, 16727, 26841, 29283, 50181, 88303, 224503, 264909, 384721, 673509, 1154163, 2030969, 3797029, 6092907, 11391087, 87331667, 261995001]

約数ペア:

[(1, 261995001), (3, 87331667), (23, 11391087), (43, 6092907), (69, 3797029), (129, 2030969), (227, 1154163), (389, 673509), (681, 384721), (989, 264909), (1167, 224503), (2967, 88303), (5221, 50181), (8947, 29283), (9761, 26841), (15663, 16727)]