51870399

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1831}}^1$

素因数の和:1931

約数の個数: 32

約数和(自身を含む): 84418560

約数和(自身を除く): 32548161

約数列:

[1, 3, 7, 19, 21, 57, 71, 133, 213, 399, 497, 1349, 1491, 1831, 4047, 5493, 9443, 12817, 28329, 34789, 38451, 104367, 130001, 243523, 390003, 730569, 910007, 2470019, 2730021, 7410057, 17290133, 51870399]

約数ペア:

[(1, 51870399), (3, 17290133), (7, 7410057), (19, 2730021), (21, 2470019), (57, 910007), (71, 730569), (133, 390003), (213, 243523), (399, 130001), (497, 104367), (1349, 38451), (1491, 34789), (1831, 28329), (4047, 12817), (5493, 9443)]