257809440

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{277}}^2$

素因数の和:579

約数の個数: 144

約数和(自身を含む): 931476672

約数和(自身を除く): 673667232

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 210, 224, 240, 277, 280, 336, 420, 480, 554, 560, 672, 831, 840, 1108, 1120, 1385, 1662, 1680, 1939, 2216, 2770, 3324, 3360, 3878, 4155, 4432, 5540, 5817, 6648, 7756, 8310, 8864, 9695, 11080, 11634, 13296, 15512, 16620, 19390, 22160, 23268, 26592, 29085, 31024, 33240, 38780, 44320, 46536, 58170, 62048, 66480, 76729, 77560, 93072, 116340, 132960, 153458, 155120, 186144, 230187, 232680, 306916, 310240, 383645, 460374, 465360, 537103, 613832, 767290, 920748, 930720, 1074206, 1150935, 1227664, 1534580, 1611309, 1841496, 2148412, 2301870, 2455328, 2685515, 3069160, 3222618, 3682992, 4296824, 4603740, 5371030, 6138320, 6445236, 7365984, 8056545, 8593648, 9207480, 10742060, 12276640, 12890472, 16113090, 17187296, 18414960, 21484120, 25780944, 32226180, 36829920, 42968240, 51561888, 64452360, 85936480, 128904720, 257809440]

約数ペア:

[(1, 257809440), (2, 128904720), (3, 85936480), (4, 64452360), (5, 51561888), (6, 42968240), (7, 36829920), (8, 32226180), (10, 25780944), (12, 21484120), (14, 18414960), (15, 17187296), (16, 16113090), (20, 12890472), (21, 12276640), (24, 10742060), (28, 9207480), (30, 8593648), (32, 8056545), (35, 7365984), (40, 6445236), (42, 6138320), (48, 5371030), (56, 4603740), (60, 4296824), (70, 3682992), (80, 3222618), (84, 3069160), (96, 2685515), (105, 2455328), (112, 2301870), (120, 2148412), (140, 1841496), (160, 1611309), (168, 1534580), (210, 1227664), (224, 1150935), (240, 1074206), (277, 930720), (280, 920748), (336, 767290), (420, 613832), (480, 537103), (554, 465360), (560, 460374), (672, 383645), (831, 310240), (840, 306916), (1108, 232680), (1120, 230187), (1385, 186144), (1662, 155120), (1680, 153458), (1939, 132960), (2216, 116340), (2770, 93072), (3324, 77560), (3360, 76729), (3878, 66480), (4155, 62048), (4432, 58170), (5540, 46536), (5817, 44320), (6648, 38780), (7756, 33240), (8310, 31024), (8864, 29085), (9695, 26592), (11080, 23268), (11634, 22160), (13296, 19390), (15512, 16620)]