25028920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1259}}^1$

素因数の和:1348

約数の個数: 64

約数和(自身を含む): 65318400

約数和(自身を除く): 40289480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1259, 1420, 1988, 2485, 2518, 2840, 3976, 4970, 5036, 6295, 8813, 9940, 10072, 12590, 17626, 19880, 25180, 35252, 44065, 50360, 70504, 88130, 89389, 176260, 178778, 352520, 357556, 446945, 625723, 715112, 893890, 1251446, 1787780, 2502892, 3128615, 3575560, 5005784, 6257230, 12514460, 25028920]

約数ペア:

[(1, 25028920), (2, 12514460), (4, 6257230), (5, 5005784), (7, 3575560), (8, 3128615), (10, 2502892), (14, 1787780), (20, 1251446), (28, 893890), (35, 715112), (40, 625723), (56, 446945), (70, 357556), (71, 352520), (140, 178778), (142, 176260), (280, 89389), (284, 88130), (355, 70504), (497, 50360), (568, 44065), (710, 35252), (994, 25180), (1259, 19880), (1420, 17626), (1988, 12590), (2485, 10072), (2518, 9940), (2840, 8813), (3976, 6295), (4970, 5036)]