21728440

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2393}}^1$

素因数の和:2631

約数の個数: 32

約数和(自身を含む): 49124880

約数和(自身を除く): 27396440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 2270, 2393, 4540, 4786, 9080, 9572, 11965, 19144, 23930, 47860, 95720, 543211, 1086422, 2172844, 2716055, 4345688, 5432110, 10864220, 21728440]

約数ペア:

[(1, 21728440), (2, 10864220), (4, 5432110), (5, 4345688), (8, 2716055), (10, 2172844), (20, 1086422), (40, 543211), (227, 95720), (454, 47860), (908, 23930), (1135, 19144), (1816, 11965), (2270, 9572), (2393, 9080), (4540, 4786)]