39987500

素因数分解:

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

素因数の和:493

約数の個数: 72

約数和(自身を含む): 100181088

約数和(自身を除く): 60193588

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, 3125, 3199, 3500, 4375, 4570, 6250, 6398, 8750, 9140, 11425, 12500, 12796, 15995, 17500, 21875, 22850, 31990, 43750, 45700, 57125, 63980, 79975, 87500, 114250, 159950, 228500, 285625, 319900, 399875, 571250, 799750, 1142500, 1428125, 1599500, 1999375, 2856250, 3998750, 5712500, 7997500, 9996875, 19993750, 39987500]

約数ペア:

[(1, 39987500), (2, 19993750), (4, 9996875), (5, 7997500), (7, 5712500), (10, 3998750), (14, 2856250), (20, 1999375), (25, 1599500), (28, 1428125), (35, 1142500), (50, 799750), (70, 571250), (100, 399875), (125, 319900), (140, 285625), (175, 228500), (250, 159950), (350, 114250), (457, 87500), (500, 79975), (625, 63980), (700, 57125), (875, 45700), (914, 43750), (1250, 31990), (1750, 22850), (1828, 21875), (2285, 17500), (2500, 15995), (3125, 12796), (3199, 12500), (3500, 11425), (4375, 9140), (4570, 8750), (6250, 6398)]