21037000

素因数分解:

$2^3\times 5^3\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:323

約数の個数: 64

約数和(自身を含む): 49935600

約数和(自身を除く): 28898600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 109, 125, 193, 200, 218, 250, 386, 436, 500, 545, 772, 872, 965, 1000, 1090, 1544, 1930, 2180, 2725, 3860, 4360, 4825, 5450, 7720, 9650, 10900, 13625, 19300, 21037, 21800, 24125, 27250, 38600, 42074, 48250, 54500, 84148, 96500, 105185, 109000, 168296, 193000, 210370, 420740, 525925, 841480, 1051850, 2103700, 2629625, 4207400, 5259250, 10518500, 21037000]

約数ペア:

[(1, 21037000), (2, 10518500), (4, 5259250), (5, 4207400), (8, 2629625), (10, 2103700), (20, 1051850), (25, 841480), (40, 525925), (50, 420740), (100, 210370), (109, 193000), (125, 168296), (193, 109000), (200, 105185), (218, 96500), (250, 84148), (386, 54500), (436, 48250), (500, 42074), (545, 38600), (772, 27250), (872, 24125), (965, 21800), (1000, 21037), (1090, 19300), (1544, 13625), (1930, 10900), (2180, 9650), (2725, 7720), (3860, 5450), (4360, 4825)]