2039780

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1291}}^1$

素因数の和:1379

約数の個数: 24

約数和(自身を含む): 4341120

約数和(自身を除く): 2301340

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1291, 1580, 2582, 5164, 6455, 12910, 25820, 101989, 203978, 407956, 509945, 1019890, 2039780]

約数ペア:

[(1, 2039780), (2, 1019890), (4, 509945), (5, 407956), (10, 203978), (20, 101989), (79, 25820), (158, 12910), (316, 6455), (395, 5164), (790, 2582), (1291, 1580)]