128904720

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{277}}^2$

素因数の和:577

約数の個数: 120

約数和(自身を含む): 458345664

約数和(自身を除く): 329440944

約数列:

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

約数ペア:

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