28120257

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1297}}^1$

素因数の和:1390

約数の個数: 32

約数和(自身を含む): 46104960

約数和(自身を除く): 17984703

約数列:

[1, 3, 9, 11, 27, 33, 73, 99, 219, 297, 657, 803, 1297, 1971, 2409, 3891, 7227, 11673, 14267, 21681, 35019, 42801, 94681, 128403, 284043, 385209, 852129, 1041491, 2556387, 3124473, 9373419, 28120257]

約数ペア:

[(1, 28120257), (3, 9373419), (9, 3124473), (11, 2556387), (27, 1041491), (33, 852129), (73, 385209), (99, 284043), (219, 128403), (297, 94681), (657, 42801), (803, 35019), (1297, 21681), (1971, 14267), (2409, 11673), (3891, 7227)]