28141000

素因数分解:

$2^3\times 5^3\times {\mathrm{107}}^1\times {\mathrm{263}}^1$

素因数の和:391

約数の個数: 64

約数和(自身を含む): 66718080

約数和(自身を除く): 38577080

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 107, 125, 200, 214, 250, 263, 428, 500, 526, 535, 856, 1000, 1052, 1070, 1315, 2104, 2140, 2630, 2675, 4280, 5260, 5350, 6575, 10520, 10700, 13150, 13375, 21400, 26300, 26750, 28141, 32875, 52600, 53500, 56282, 65750, 107000, 112564, 131500, 140705, 225128, 263000, 281410, 562820, 703525, 1125640, 1407050, 2814100, 3517625, 5628200, 7035250, 14070500, 28141000]

約数ペア:

[(1, 28141000), (2, 14070500), (4, 7035250), (5, 5628200), (8, 3517625), (10, 2814100), (20, 1407050), (25, 1125640), (40, 703525), (50, 562820), (100, 281410), (107, 263000), (125, 225128), (200, 140705), (214, 131500), (250, 112564), (263, 107000), (428, 65750), (500, 56282), (526, 53500), (535, 52600), (856, 32875), (1000, 28141), (1052, 26750), (1070, 26300), (1315, 21400), (2104, 13375), (2140, 13150), (2630, 10700), (2675, 10520), (4280, 6575), (5260, 5350)]