25189520

素因数分解:

$2^4\times 5^1\times {\mathrm{499}}^1\times {\mathrm{631}}^1$

素因数の和:1143

約数の個数: 40

約数和(自身を含む): 58776000

約数和(自身を除く): 33586480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499, 631, 998, 1262, 1996, 2495, 2524, 3155, 3992, 4990, 5048, 6310, 7984, 9980, 10096, 12620, 19960, 25240, 39920, 50480, 314869, 629738, 1259476, 1574345, 2518952, 3148690, 5037904, 6297380, 12594760, 25189520]

約数ペア:

[(1, 25189520), (2, 12594760), (4, 6297380), (5, 5037904), (8, 3148690), (10, 2518952), (16, 1574345), (20, 1259476), (40, 629738), (80, 314869), (499, 50480), (631, 39920), (998, 25240), (1262, 19960), (1996, 12620), (2495, 10096), (2524, 9980), (3155, 7984), (3992, 6310), (4990, 5048)]