387740871

素因数分解:

$3^3\times 7^2\times {\mathrm{37}}^1\times {\mathrm{89}}^2$

素因数の和:238

約数の個数: 72

約数和(自身を含む): 694073040

約数和(自身を除く): 306332169

約数列:

[1, 3, 7, 9, 21, 27, 37, 49, 63, 89, 111, 147, 189, 259, 267, 333, 441, 623, 777, 801, 999, 1323, 1813, 1869, 2331, 2403, 3293, 4361, 5439, 5607, 6993, 7921, 9879, 13083, 16317, 16821, 23051, 23763, 29637, 39249, 48951, 55447, 69153, 71289, 88911, 117747, 161357, 166341, 207459, 213867, 293077, 388129, 484071, 499023, 622377, 879231, 1164387, 1452213, 1497069, 2051539, 2637693, 3493161, 4356639, 6154617, 7913079, 10479483, 14360773, 18463851, 43082319, 55391553, 129246957, 387740871]

約数ペア:

[(1, 387740871), (3, 129246957), (7, 55391553), (9, 43082319), (21, 18463851), (27, 14360773), (37, 10479483), (49, 7913079), (63, 6154617), (89, 4356639), (111, 3493161), (147, 2637693), (189, 2051539), (259, 1497069), (267, 1452213), (333, 1164387), (441, 879231), (623, 622377), (777, 499023), (801, 484071), (999, 388129), (1323, 293077), (1813, 213867), (1869, 207459), (2331, 166341), (2403, 161357), (3293, 117747), (4361, 88911), (5439, 71289), (5607, 69153), (6993, 55447), (7921, 48951), (9879, 39249), (13083, 29637), (16317, 23763), (16821, 23051)]