28916811

素因数分解:

$3^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1987}}^1$

素因数の和:2021

約数の個数: 48

約数和(自身を含む): 54391680

約数和(自身を除く): 25474869

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 49, 63, 77, 99, 147, 189, 231, 297, 441, 539, 693, 1323, 1617, 1987, 2079, 4851, 5961, 13909, 14553, 17883, 21857, 41727, 53649, 65571, 97363, 125181, 152999, 196713, 292089, 375543, 458997, 590139, 876267, 1070993, 1376991, 2628801, 3212979, 4130973, 9638937, 28916811]

約数ペア:

[(1, 28916811), (3, 9638937), (7, 4130973), (9, 3212979), (11, 2628801), (21, 1376991), (27, 1070993), (33, 876267), (49, 590139), (63, 458997), (77, 375543), (99, 292089), (147, 196713), (189, 152999), (231, 125181), (297, 97363), (441, 65571), (539, 53649), (693, 41727), (1323, 21857), (1617, 17883), (1987, 14553), (2079, 13909), (4851, 5961)]