18105520

素因数分解:

$2^4\times 5^1\times {\mathrm{227}}^1\times {\mathrm{997}}^1$

素因数の和:1237

約数の個数: 40

約数和(自身を含む): 42323184

約数和(自身を除く): 24217664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 227, 454, 908, 997, 1135, 1816, 1994, 2270, 3632, 3988, 4540, 4985, 7976, 9080, 9970, 15952, 18160, 19940, 39880, 79760, 226319, 452638, 905276, 1131595, 1810552, 2263190, 3621104, 4526380, 9052760, 18105520]

約数ペア:

[(1, 18105520), (2, 9052760), (4, 4526380), (5, 3621104), (8, 2263190), (10, 1810552), (16, 1131595), (20, 905276), (40, 452638), (80, 226319), (227, 79760), (454, 39880), (908, 19940), (997, 18160), (1135, 15952), (1816, 9970), (1994, 9080), (2270, 7976), (3632, 4985), (3988, 4540)]