20798680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{1259}}^1$

素因数の和:1336

約数の個数: 64

約数和(自身を含む): 54432000

約数和(自身を除く): 33633320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 59, 70, 118, 140, 236, 280, 295, 413, 472, 590, 826, 1180, 1259, 1652, 2065, 2360, 2518, 3304, 4130, 5036, 6295, 8260, 8813, 10072, 12590, 16520, 17626, 25180, 35252, 44065, 50360, 70504, 74281, 88130, 148562, 176260, 297124, 352520, 371405, 519967, 594248, 742810, 1039934, 1485620, 2079868, 2599835, 2971240, 4159736, 5199670, 10399340, 20798680]

約数ペア:

[(1, 20798680), (2, 10399340), (4, 5199670), (5, 4159736), (7, 2971240), (8, 2599835), (10, 2079868), (14, 1485620), (20, 1039934), (28, 742810), (35, 594248), (40, 519967), (56, 371405), (59, 352520), (70, 297124), (118, 176260), (140, 148562), (236, 88130), (280, 74281), (295, 70504), (413, 50360), (472, 44065), (590, 35252), (826, 25180), (1180, 17626), (1259, 16520), (1652, 12590), (2065, 10072), (2360, 8813), (2518, 8260), (3304, 6295), (4130, 5036)]