1580000

素因数分解:

$2^5\times 5^4\times {\mathrm{79}}^1$

素因数の和:109

約数の個数: 60

約数和(自身を含む): 3936240

約数和(自身を除く): 2356240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 79, 80, 100, 125, 158, 160, 200, 250, 316, 395, 400, 500, 625, 632, 790, 800, 1000, 1250, 1264, 1580, 1975, 2000, 2500, 2528, 3160, 3950, 4000, 5000, 6320, 7900, 9875, 10000, 12640, 15800, 19750, 20000, 31600, 39500, 49375, 63200, 79000, 98750, 158000, 197500, 316000, 395000, 790000, 1580000]

約数ペア:

[(1, 1580000), (2, 790000), (4, 395000), (5, 316000), (8, 197500), (10, 158000), (16, 98750), (20, 79000), (25, 63200), (32, 49375), (40, 39500), (50, 31600), (79, 20000), (80, 19750), (100, 15800), (125, 12640), (158, 10000), (160, 9875), (200, 7900), (250, 6320), (316, 5000), (395, 4000), (400, 3950), (500, 3160), (625, 2528), (632, 2500), (790, 2000), (800, 1975), (1000, 1580), (1250, 1264)]