28472787

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 49520640

約数和(自身を除く): 21047853

約数列:

[1, 3, 7, 9, 21, 31, 61, 63, 93, 183, 217, 239, 279, 427, 549, 651, 717, 1281, 1673, 1891, 1953, 2151, 3843, 5019, 5673, 7409, 13237, 14579, 15057, 17019, 22227, 39711, 43737, 51863, 66681, 102053, 119133, 131211, 155589, 306159, 451949, 466767, 918477, 1355847, 3163643, 4067541, 9490929, 28472787]

約数ペア:

[(1, 28472787), (3, 9490929), (7, 4067541), (9, 3163643), (21, 1355847), (31, 918477), (61, 466767), (63, 451949), (93, 306159), (183, 155589), (217, 131211), (239, 119133), (279, 102053), (427, 66681), (549, 51863), (651, 43737), (717, 39711), (1281, 22227), (1673, 17019), (1891, 15057), (1953, 14579), (2151, 13237), (3843, 7409), (5019, 5673)]