15800000

素因数分解:

$2^6\times 5^5\times {\mathrm{79}}^1$

素因数の和:116

約数の個数: 84

約数和(自身を含む): 39684960

約数和(自身を除く): 23884960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 79, 80, 100, 125, 158, 160, 200, 250, 316, 320, 395, 400, 500, 625, 632, 790, 800, 1000, 1250, 1264, 1580, 1600, 1975, 2000, 2500, 2528, 3125, 3160, 3950, 4000, 5000, 5056, 6250, 6320, 7900, 8000, 9875, 10000, 12500, 12640, 15800, 19750, 20000, 25000, 25280, 31600, 39500, 40000, 49375, 50000, 63200, 79000, 98750, 100000, 126400, 158000, 197500, 200000, 246875, 316000, 395000, 493750, 632000, 790000, 987500, 1580000, 1975000, 3160000, 3950000, 7900000, 15800000]

約数ペア:

[(1, 15800000), (2, 7900000), (4, 3950000), (5, 3160000), (8, 1975000), (10, 1580000), (16, 987500), (20, 790000), (25, 632000), (32, 493750), (40, 395000), (50, 316000), (64, 246875), (79, 200000), (80, 197500), (100, 158000), (125, 126400), (158, 100000), (160, 98750), (200, 79000), (250, 63200), (316, 50000), (320, 49375), (395, 40000), (400, 39500), (500, 31600), (625, 25280), (632, 25000), (790, 20000), (800, 19750), (1000, 15800), (1250, 12640), (1264, 12500), (1580, 10000), (1600, 9875), (1975, 8000), (2000, 7900), (2500, 6320), (2528, 6250), (3125, 5056), (3160, 5000), (3950, 4000)]