208523727

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:234

約数の個数: 80

約数和(自身を含む): 352661760

約数和(自身を除く): 144138033

約数列:

[1, 3, 9, 19, 23, 27, 43, 57, 69, 81, 129, 137, 171, 207, 387, 411, 437, 513, 621, 817, 989, 1161, 1233, 1311, 1539, 1863, 2451, 2603, 2967, 3151, 3483, 3699, 3933, 5891, 7353, 7809, 8901, 9453, 11097, 11799, 17673, 18791, 22059, 23427, 26703, 28359, 35397, 53019, 56373, 59869, 66177, 70281, 80109, 85077, 111929, 135493, 159057, 169119, 179607, 210843, 255231, 335787, 406479, 477171, 507357, 538821, 1007361, 1219437, 1522071, 1616463, 2574367, 3022083, 3658311, 4849389, 7723101, 9066249, 10974933, 23169303, 69507909, 208523727]

約数ペア:

[(1, 208523727), (3, 69507909), (9, 23169303), (19, 10974933), (23, 9066249), (27, 7723101), (43, 4849389), (57, 3658311), (69, 3022083), (81, 2574367), (129, 1616463), (137, 1522071), (171, 1219437), (207, 1007361), (387, 538821), (411, 507357), (437, 477171), (513, 406479), (621, 335787), (817, 255231), (989, 210843), (1161, 179607), (1233, 169119), (1311, 159057), (1539, 135493), (1863, 111929), (2451, 85077), (2603, 80109), (2967, 70281), (3151, 66177), (3483, 59869), (3699, 56373), (3933, 53019), (5891, 35397), (7353, 28359), (7809, 26703), (8901, 23427), (9453, 22059), (11097, 18791), (11799, 17673)]