28687617

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{397}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 50332672

約数和(自身を除く): 21645055

約数列:

[1, 3, 7, 9, 21, 31, 37, 63, 93, 111, 217, 259, 279, 333, 397, 651, 777, 1147, 1191, 1953, 2331, 2779, 3441, 3573, 8029, 8337, 10323, 12307, 14689, 24087, 25011, 36921, 44067, 72261, 86149, 102823, 110763, 132201, 258447, 308469, 455359, 775341, 925407, 1366077, 3187513, 4098231, 9562539, 28687617]

約数ペア:

[(1, 28687617), (3, 9562539), (7, 4098231), (9, 3187513), (21, 1366077), (31, 925407), (37, 775341), (63, 455359), (93, 308469), (111, 258447), (217, 132201), (259, 110763), (279, 102823), (333, 86149), (397, 72261), (651, 44067), (777, 36921), (1147, 25011), (1191, 24087), (1953, 14689), (2331, 12307), (2779, 10323), (3441, 8337), (3573, 8029)]