256786560

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{409}}^1$

素因数の和:543

約数の個数: 192

約数和(自身を含む): 897039000

約数和(自身を除く): 640252440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 109, 120, 128, 144, 160, 180, 192, 218, 240, 288, 320, 327, 360, 384, 409, 436, 480, 545, 576, 640, 654, 720, 818, 872, 960, 981, 1090, 1152, 1227, 1308, 1440, 1635, 1636, 1744, 1920, 1962, 2045, 2180, 2454, 2616, 2880, 3270, 3272, 3488, 3681, 3924, 4090, 4360, 4905, 4908, 5232, 5760, 6135, 6540, 6544, 6976, 7362, 7848, 8180, 8720, 9810, 9816, 10464, 12270, 13080, 13088, 13952, 14724, 15696, 16360, 17440, 18405, 19620, 19632, 20928, 24540, 26160, 26176, 29448, 31392, 32720, 34880, 36810, 39240, 39264, 41856, 44581, 49080, 52320, 52352, 58896, 62784, 65440, 69760, 73620, 78480, 78528, 89162, 98160, 104640, 117792, 125568, 130880, 133743, 147240, 156960, 157056, 178324, 196320, 209280, 222905, 235584, 261760, 267486, 294480, 313920, 356648, 392640, 401229, 445810, 471168, 534972, 588960, 627840, 668715, 713296, 785280, 802458, 891620, 1069944, 1177920, 1337430, 1426592, 1604916, 1783240, 2006145, 2139888, 2355840, 2674860, 2853184, 3209832, 3566480, 4012290, 4279776, 5349720, 5706368, 6419664, 7132960, 8024580, 8559552, 10699440, 12839328, 14265920, 16049160, 17119104, 21398880, 25678656, 28531840, 32098320, 42797760, 51357312, 64196640, 85595520, 128393280, 256786560]

約数ペア:

[(1, 256786560), (2, 128393280), (3, 85595520), (4, 64196640), (5, 51357312), (6, 42797760), (8, 32098320), (9, 28531840), (10, 25678656), (12, 21398880), (15, 17119104), (16, 16049160), (18, 14265920), (20, 12839328), (24, 10699440), (30, 8559552), (32, 8024580), (36, 7132960), (40, 6419664), (45, 5706368), (48, 5349720), (60, 4279776), (64, 4012290), (72, 3566480), (80, 3209832), (90, 2853184), (96, 2674860), (109, 2355840), (120, 2139888), (128, 2006145), (144, 1783240), (160, 1604916), (180, 1426592), (192, 1337430), (218, 1177920), (240, 1069944), (288, 891620), (320, 802458), (327, 785280), (360, 713296), (384, 668715), (409, 627840), (436, 588960), (480, 534972), (545, 471168), (576, 445810), (640, 401229), (654, 392640), (720, 356648), (818, 313920), (872, 294480), (960, 267486), (981, 261760), (1090, 235584), (1152, 222905), (1227, 209280), (1308, 196320), (1440, 178324), (1635, 157056), (1636, 156960), (1744, 147240), (1920, 133743), (1962, 130880), (2045, 125568), (2180, 117792), (2454, 104640), (2616, 98160), (2880, 89162), (3270, 78528), (3272, 78480), (3488, 73620), (3681, 69760), (3924, 65440), (4090, 62784), (4360, 58896), (4905, 52352), (4908, 52320), (5232, 49080), (5760, 44581), (6135, 41856), (6540, 39264), (6544, 39240), (6976, 36810), (7362, 34880), (7848, 32720), (8180, 31392), (8720, 29448), (9810, 26176), (9816, 26160), (10464, 24540), (12270, 20928), (13080, 19632), (13088, 19620), (13952, 18405), (14724, 17440), (15696, 16360)]