320427520

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{17881}}^1$

素因数の和:17911

約数の個数: 80

約数和(自身を含む): 878077728

約数和(自身を除く): 557650208

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 512, 560, 640, 896, 1120, 1280, 1792, 2240, 2560, 3584, 4480, 8960, 17881, 17920, 35762, 71524, 89405, 125167, 143048, 178810, 250334, 286096, 357620, 500668, 572192, 625835, 715240, 1001336, 1144384, 1251670, 1430480, 2002672, 2288768, 2503340, 2860960, 4005344, 4577536, 5006680, 5721920, 8010688, 9155072, 10013360, 11443840, 16021376, 20026720, 22887680, 32042752, 40053440, 45775360, 64085504, 80106880, 160213760, 320427520]

約数ペア:

[(1, 320427520), (2, 160213760), (4, 80106880), (5, 64085504), (7, 45775360), (8, 40053440), (10, 32042752), (14, 22887680), (16, 20026720), (20, 16021376), (28, 11443840), (32, 10013360), (35, 9155072), (40, 8010688), (56, 5721920), (64, 5006680), (70, 4577536), (80, 4005344), (112, 2860960), (128, 2503340), (140, 2288768), (160, 2002672), (224, 1430480), (256, 1251670), (280, 1144384), (320, 1001336), (448, 715240), (512, 625835), (560, 572192), (640, 500668), (896, 357620), (1120, 286096), (1280, 250334), (1792, 178810), (2240, 143048), (2560, 125167), (3584, 89405), (4480, 71524), (8960, 35762), (17881, 17920)]