7997500

素因数分解:

$2^2\times 5^4\times 7^1\times {\mathrm{457}}^1$

素因数の和:488

約数の個数: 60

約数和(自身を含む): 20031088

約数和(自身を除く): 12033588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 250, 350, 457, 500, 625, 700, 875, 914, 1250, 1750, 1828, 2285, 2500, 3199, 3500, 4375, 4570, 6398, 8750, 9140, 11425, 12796, 15995, 17500, 22850, 31990, 45700, 57125, 63980, 79975, 114250, 159950, 228500, 285625, 319900, 399875, 571250, 799750, 1142500, 1599500, 1999375, 3998750, 7997500]

約数ペア:

[(1, 7997500), (2, 3998750), (4, 1999375), (5, 1599500), (7, 1142500), (10, 799750), (14, 571250), (20, 399875), (25, 319900), (28, 285625), (35, 228500), (50, 159950), (70, 114250), (100, 79975), (125, 63980), (140, 57125), (175, 45700), (250, 31990), (350, 22850), (457, 17500), (500, 15995), (625, 12796), (700, 11425), (875, 9140), (914, 8750), (1250, 6398), (1750, 4570), (1828, 4375), (2285, 3500), (2500, 3199)]