28263921

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1\times {\mathrm{179}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 44328960

約数和(自身を除く): 16065039

約数列:

[1, 3, 7, 21, 73, 103, 179, 219, 309, 511, 537, 721, 1253, 1533, 2163, 3759, 7519, 13067, 18437, 22557, 39201, 52633, 55311, 91469, 129059, 157899, 274407, 387177, 1345901, 4037703, 9421307, 28263921]

約数ペア:

[(1, 28263921), (3, 9421307), (7, 4037703), (21, 1345901), (73, 387177), (103, 274407), (179, 157899), (219, 129059), (309, 91469), (511, 55311), (537, 52633), (721, 39201), (1253, 22557), (1533, 18437), (2163, 13067), (3759, 7519)]