25640240

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4057}}^1$

素因数の和:4149

約数の個数: 40

約数和(自身を含む): 60383040

約数和(自身を除く): 34742800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 4057, 6320, 8114, 16228, 20285, 32456, 40570, 64912, 81140, 162280, 320503, 324560, 641006, 1282012, 1602515, 2564024, 3205030, 5128048, 6410060, 12820120, 25640240]

約数ペア:

[(1, 25640240), (2, 12820120), (4, 6410060), (5, 5128048), (8, 3205030), (10, 2564024), (16, 1602515), (20, 1282012), (40, 641006), (79, 324560), (80, 320503), (158, 162280), (316, 81140), (395, 64912), (632, 40570), (790, 32456), (1264, 20285), (1580, 16228), (3160, 8114), (4057, 6320)]