1264000

素因数分解:

$2^7\times 5^3\times {\mathrm{79}}^1$

素因数の和:108

約数の個数: 64

約数和(自身を含む): 3182400

約数和(自身を除く): 1918400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 79, 80, 100, 125, 128, 158, 160, 200, 250, 316, 320, 395, 400, 500, 632, 640, 790, 800, 1000, 1264, 1580, 1600, 1975, 2000, 2528, 3160, 3200, 3950, 4000, 5056, 6320, 7900, 8000, 9875, 10112, 12640, 15800, 16000, 19750, 25280, 31600, 39500, 50560, 63200, 79000, 126400, 158000, 252800, 316000, 632000, 1264000]

約数ペア:

[(1, 1264000), (2, 632000), (4, 316000), (5, 252800), (8, 158000), (10, 126400), (16, 79000), (20, 63200), (25, 50560), (32, 39500), (40, 31600), (50, 25280), (64, 19750), (79, 16000), (80, 15800), (100, 12640), (125, 10112), (128, 9875), (158, 8000), (160, 7900), (200, 6320), (250, 5056), (316, 4000), (320, 3950), (395, 3200), (400, 3160), (500, 2528), (632, 2000), (640, 1975), (790, 1600), (800, 1580), (1000, 1264)]