21052760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27701}}^1$

素因数の和:27731

約数の個数: 32

約数和(自身を含む): 49863600

約数和(自身を除く): 28810840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27701, 55402, 110804, 138505, 221608, 277010, 526319, 554020, 1052638, 1108040, 2105276, 2631595, 4210552, 5263190, 10526380, 21052760]

約数ペア:

[(1, 21052760), (2, 10526380), (4, 5263190), (5, 4210552), (8, 2631595), (10, 2105276), (19, 1108040), (20, 1052638), (38, 554020), (40, 526319), (76, 277010), (95, 221608), (152, 138505), (190, 110804), (380, 55402), (760, 27701)]