21409400

素因数分解:

$2^3\times 5^2\times {\mathrm{167}}^1\times {\mathrm{641}}^1$

素因数の和:824

約数の個数: 48

約数和(自身を含む): 50153040

約数和(自身を除く): 28743640

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 167, 200, 334, 641, 668, 835, 1282, 1336, 1670, 2564, 3205, 3340, 4175, 5128, 6410, 6680, 8350, 12820, 16025, 16700, 25640, 32050, 33400, 64100, 107047, 128200, 214094, 428188, 535235, 856376, 1070470, 2140940, 2676175, 4281880, 5352350, 10704700, 21409400]

約数ペア:

[(1, 21409400), (2, 10704700), (4, 5352350), (5, 4281880), (8, 2676175), (10, 2140940), (20, 1070470), (25, 856376), (40, 535235), (50, 428188), (100, 214094), (167, 128200), (200, 107047), (334, 64100), (641, 33400), (668, 32050), (835, 25640), (1282, 16700), (1336, 16025), (1670, 12820), (2564, 8350), (3205, 6680), (3340, 6410), (4175, 5128)]