18150920

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{1999}}^1$

素因数の和:2237

約数の個数: 32

約数和(自身を含む): 41040000

約数和(自身を除く): 22889080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 1999, 2270, 3998, 4540, 7996, 9080, 9995, 15992, 19990, 39980, 79960, 453773, 907546, 1815092, 2268865, 3630184, 4537730, 9075460, 18150920]

約数ペア:

[(1, 18150920), (2, 9075460), (4, 4537730), (5, 3630184), (8, 2268865), (10, 1815092), (20, 907546), (40, 453773), (227, 79960), (454, 39980), (908, 19990), (1135, 15992), (1816, 9995), (1999, 9080), (2270, 7996), (3998, 4540)]