256122720

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{25409}}^1$

素因数の和:25437

約数の個数: 144

約数和(自身を含む): 998917920

約数和(自身を除く): 742795200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2520, 3360, 5040, 10080, 25409, 50818, 76227, 101636, 127045, 152454, 177863, 203272, 228681, 254090, 304908, 355726, 381135, 406544, 457362, 508180, 533589, 609816, 711452, 762270, 813088, 889315, 914724, 1016360, 1067178, 1143405, 1219632, 1422904, 1524540, 1600767, 1778630, 1829448, 2032720, 2134356, 2286810, 2439264, 2667945, 2845808, 3049080, 3201534, 3557260, 3658896, 4065440, 4268712, 4573620, 5335890, 5691616, 6098160, 6403068, 7114520, 7317792, 8003835, 8537424, 9147240, 10671780, 12196320, 12806136, 14229040, 16007670, 17074848, 18294480, 21343560, 25612272, 28458080, 32015340, 36588960, 42687120, 51224544, 64030680, 85374240, 128061360, 256122720]

約数ペア:

[(1, 256122720), (2, 128061360), (3, 85374240), (4, 64030680), (5, 51224544), (6, 42687120), (7, 36588960), (8, 32015340), (9, 28458080), (10, 25612272), (12, 21343560), (14, 18294480), (15, 17074848), (16, 16007670), (18, 14229040), (20, 12806136), (21, 12196320), (24, 10671780), (28, 9147240), (30, 8537424), (32, 8003835), (35, 7317792), (36, 7114520), (40, 6403068), (42, 6098160), (45, 5691616), (48, 5335890), (56, 4573620), (60, 4268712), (63, 4065440), (70, 3658896), (72, 3557260), (80, 3201534), (84, 3049080), (90, 2845808), (96, 2667945), (105, 2439264), (112, 2286810), (120, 2134356), (126, 2032720), (140, 1829448), (144, 1778630), (160, 1600767), (168, 1524540), (180, 1422904), (210, 1219632), (224, 1143405), (240, 1067178), (252, 1016360), (280, 914724), (288, 889315), (315, 813088), (336, 762270), (360, 711452), (420, 609816), (480, 533589), (504, 508180), (560, 457362), (630, 406544), (672, 381135), (720, 355726), (840, 304908), (1008, 254090), (1120, 228681), (1260, 203272), (1440, 177863), (1680, 152454), (2016, 127045), (2520, 101636), (3360, 76227), (5040, 50818), (10080, 25409)]