27987987

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:323

約数の個数: 32

約数和(自身を含む): 41057280

約数和(自身を除く): 13069293

約数列:

[1, 3, 23, 29, 69, 71, 87, 197, 213, 591, 667, 1633, 2001, 2059, 4531, 4899, 5713, 6177, 13593, 13987, 17139, 41961, 47357, 131399, 142071, 321701, 394197, 405623, 965103, 1216869, 9329329, 27987987]

約数ペア:

[(1, 27987987), (3, 9329329), (23, 1216869), (29, 965103), (69, 405623), (71, 394197), (87, 321701), (197, 142071), (213, 131399), (591, 47357), (667, 41961), (1633, 17139), (2001, 13987), (2059, 13593), (4531, 6177), (4899, 5713)]