25588720

素因数分解:

$2^4\times 5^1\times {\mathrm{499}}^1\times {\mathrm{641}}^1$

素因数の和:1153

約数の個数: 40

約数和(自身を含む): 59706000

約数和(自身を除く): 34117280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499, 641, 998, 1282, 1996, 2495, 2564, 3205, 3992, 4990, 5128, 6410, 7984, 9980, 10256, 12820, 19960, 25640, 39920, 51280, 319859, 639718, 1279436, 1599295, 2558872, 3198590, 5117744, 6397180, 12794360, 25588720]

約数ペア:

[(1, 25588720), (2, 12794360), (4, 6397180), (5, 5117744), (8, 3198590), (10, 2558872), (16, 1599295), (20, 1279436), (40, 639718), (80, 319859), (499, 51280), (641, 39920), (998, 25640), (1282, 19960), (1996, 12820), (2495, 10256), (2564, 9980), (3205, 7984), (3992, 6410), (4990, 5128)]