20961992

素因数分解:

$2^3\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 40500000

約数和(自身を除く): 19538008

約数列:

[1, 2, 4, 8, 59, 89, 118, 178, 236, 356, 472, 499, 712, 998, 1996, 3992, 5251, 10502, 21004, 29441, 42008, 44411, 58882, 88822, 117764, 177644, 235528, 355288, 2620249, 5240498, 10480996, 20961992]

約数ペア:

[(1, 20961992), (2, 10480996), (4, 5240498), (8, 2620249), (59, 355288), (89, 235528), (118, 177644), (178, 117764), (236, 88822), (356, 58882), (472, 44411), (499, 42008), (712, 29441), (998, 21004), (1996, 10502), (3992, 5251)]