28151379

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 45287424

約数和(自身を除く): 17136045

約数列:

[1, 3, 9, 23, 31, 41, 69, 93, 107, 123, 207, 279, 321, 369, 713, 943, 963, 1271, 2139, 2461, 2829, 3317, 3813, 4387, 6417, 7383, 8487, 9951, 11439, 13161, 22149, 29233, 29853, 39483, 76291, 87699, 100901, 135997, 228873, 263097, 302703, 407991, 686619, 908109, 1223973, 3127931, 9383793, 28151379]

約数ペア:

[(1, 28151379), (3, 9383793), (9, 3127931), (23, 1223973), (31, 908109), (41, 686619), (69, 407991), (93, 302703), (107, 263097), (123, 228873), (207, 135997), (279, 100901), (321, 87699), (369, 76291), (713, 39483), (943, 29853), (963, 29233), (1271, 22149), (2139, 13161), (2461, 11439), (2829, 9951), (3317, 8487), (3813, 7383), (4387, 6417)]