179539760

素因数分解:

$2^4\times 5^1\times {\mathrm{997}}^1\times {\mathrm{2251}}^1$

素因数の和:3261

約数の個数: 40

約数和(自身を含む): 418034256

約数和(自身を除く): 238494496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 997, 1994, 2251, 3988, 4502, 4985, 7976, 9004, 9970, 11255, 15952, 18008, 19940, 22510, 36016, 39880, 45020, 79760, 90040, 180080, 2244247, 4488494, 8976988, 11221235, 17953976, 22442470, 35907952, 44884940, 89769880, 179539760]

約数ペア:

[(1, 179539760), (2, 89769880), (4, 44884940), (5, 35907952), (8, 22442470), (10, 17953976), (16, 11221235), (20, 8976988), (40, 4488494), (80, 2244247), (997, 180080), (1994, 90040), (2251, 79760), (3988, 45020), (4502, 39880), (4985, 36016), (7976, 22510), (9004, 19940), (9970, 18008), (11255, 15952)]