1388000

素因数分解:

$2^5\times 5^3\times {\mathrm{347}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 3420144

約数和(自身を除く): 2032144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 347, 400, 500, 694, 800, 1000, 1388, 1735, 2000, 2776, 3470, 4000, 5552, 6940, 8675, 11104, 13880, 17350, 27760, 34700, 43375, 55520, 69400, 86750, 138800, 173500, 277600, 347000, 694000, 1388000]

約数ペア:

[(1, 1388000), (2, 694000), (4, 347000), (5, 277600), (8, 173500), (10, 138800), (16, 86750), (20, 69400), (25, 55520), (32, 43375), (40, 34700), (50, 27760), (80, 17350), (100, 13880), (125, 11104), (160, 8675), (200, 6940), (250, 5552), (347, 4000), (400, 3470), (500, 2776), (694, 2000), (800, 1735), (1000, 1388)]