257841920

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{4111}}^1$

素因数の和:4146

約数の個数: 108

約数和(自身を含む): 718621344

約数和(自身を除く): 460779424

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 392, 448, 490, 560, 640, 784, 896, 980, 1120, 1280, 1568, 1792, 1960, 2240, 3136, 3920, 4111, 4480, 6272, 7840, 8222, 8960, 12544, 15680, 16444, 20555, 28777, 31360, 32888, 41110, 57554, 62720, 65776, 82220, 115108, 131552, 143885, 164440, 201439, 230216, 263104, 287770, 328880, 402878, 460432, 526208, 575540, 657760, 805756, 920864, 1007195, 1052416, 1151080, 1315520, 1611512, 1841728, 2014390, 2302160, 2631040, 3223024, 3683456, 4028780, 4604320, 5262080, 6446048, 7366912, 8057560, 9208640, 12892096, 16115120, 18417280, 25784192, 32230240, 36834560, 51568384, 64460480, 128920960, 257841920]

約数ペア:

[(1, 257841920), (2, 128920960), (4, 64460480), (5, 51568384), (7, 36834560), (8, 32230240), (10, 25784192), (14, 18417280), (16, 16115120), (20, 12892096), (28, 9208640), (32, 8057560), (35, 7366912), (40, 6446048), (49, 5262080), (56, 4604320), (64, 4028780), (70, 3683456), (80, 3223024), (98, 2631040), (112, 2302160), (128, 2014390), (140, 1841728), (160, 1611512), (196, 1315520), (224, 1151080), (245, 1052416), (256, 1007195), (280, 920864), (320, 805756), (392, 657760), (448, 575540), (490, 526208), (560, 460432), (640, 402878), (784, 328880), (896, 287770), (980, 263104), (1120, 230216), (1280, 201439), (1568, 164440), (1792, 143885), (1960, 131552), (2240, 115108), (3136, 82220), (3920, 65776), (4111, 62720), (4480, 57554), (6272, 41110), (7840, 32888), (8222, 31360), (8960, 28777), (12544, 20555), (15680, 16444)]