256738440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{929}}^1$

素因数の和:1004

約数の個数: 192

約数和(自身を含む): 916012800

約数和(自身を除く): 659274360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 47, 49, 56, 60, 70, 84, 94, 98, 105, 120, 140, 141, 147, 168, 188, 196, 210, 235, 245, 280, 282, 294, 329, 376, 392, 420, 470, 490, 564, 588, 658, 705, 735, 840, 929, 940, 980, 987, 1128, 1176, 1316, 1410, 1470, 1645, 1858, 1880, 1960, 1974, 2303, 2632, 2787, 2820, 2940, 3290, 3716, 3948, 4606, 4645, 4935, 5574, 5640, 5880, 6503, 6580, 6909, 7432, 7896, 9212, 9290, 9870, 11148, 11515, 13006, 13160, 13818, 13935, 18424, 18580, 19509, 19740, 22296, 23030, 26012, 27636, 27870, 32515, 34545, 37160, 39018, 39480, 43663, 45521, 46060, 52024, 55272, 55740, 65030, 69090, 78036, 87326, 91042, 92120, 97545, 111480, 130060, 130989, 136563, 138180, 156072, 174652, 182084, 195090, 218315, 227605, 260120, 261978, 273126, 276360, 305641, 349304, 364168, 390180, 436630, 455210, 523956, 546252, 611282, 654945, 682815, 780360, 873260, 910420, 916923, 1047912, 1092504, 1222564, 1309890, 1365630, 1528205, 1746520, 1820840, 1833846, 2139487, 2445128, 2619780, 2731260, 3056410, 3667692, 4278974, 4584615, 5239560, 5462520, 6112820, 6418461, 7335384, 8557948, 9169230, 10697435, 12225640, 12836922, 17115896, 18338460, 21394870, 25673844, 32092305, 36676920, 42789740, 51347688, 64184610, 85579480, 128369220, 256738440]

約数ペア:

[(1, 256738440), (2, 128369220), (3, 85579480), (4, 64184610), (5, 51347688), (6, 42789740), (7, 36676920), (8, 32092305), (10, 25673844), (12, 21394870), (14, 18338460), (15, 17115896), (20, 12836922), (21, 12225640), (24, 10697435), (28, 9169230), (30, 8557948), (35, 7335384), (40, 6418461), (42, 6112820), (47, 5462520), (49, 5239560), (56, 4584615), (60, 4278974), (70, 3667692), (84, 3056410), (94, 2731260), (98, 2619780), (105, 2445128), (120, 2139487), (140, 1833846), (141, 1820840), (147, 1746520), (168, 1528205), (188, 1365630), (196, 1309890), (210, 1222564), (235, 1092504), (245, 1047912), (280, 916923), (282, 910420), (294, 873260), (329, 780360), (376, 682815), (392, 654945), (420, 611282), (470, 546252), (490, 523956), (564, 455210), (588, 436630), (658, 390180), (705, 364168), (735, 349304), (840, 305641), (929, 276360), (940, 273126), (980, 261978), (987, 260120), (1128, 227605), (1176, 218315), (1316, 195090), (1410, 182084), (1470, 174652), (1645, 156072), (1858, 138180), (1880, 136563), (1960, 130989), (1974, 130060), (2303, 111480), (2632, 97545), (2787, 92120), (2820, 91042), (2940, 87326), (3290, 78036), (3716, 69090), (3948, 65030), (4606, 55740), (4645, 55272), (4935, 52024), (5574, 46060), (5640, 45521), (5880, 43663), (6503, 39480), (6580, 39018), (6909, 37160), (7432, 34545), (7896, 32515), (9212, 27870), (9290, 27636), (9870, 26012), (11148, 23030), (11515, 22296), (13006, 19740), (13160, 19509), (13818, 18580), (13935, 18424)]