20744120

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5827}}^1$

素因数の和:5927

約数の個数: 32

約数和(自身を含む): 47206800

約数和(自身を除く): 26462680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5827, 11654, 23308, 29135, 46616, 58270, 116540, 233080, 518603, 1037206, 2074412, 2593015, 4148824, 5186030, 10372060, 20744120]

約数ペア:

[(1, 20744120), (2, 10372060), (4, 5186030), (5, 4148824), (8, 2593015), (10, 2074412), (20, 1037206), (40, 518603), (89, 233080), (178, 116540), (356, 58270), (445, 46616), (712, 29135), (890, 23308), (1780, 11654), (3560, 5827)]