19980978

素因数分解:

$2^1\times 3^1\times {\mathrm{677}}^1\times {\mathrm{4919}}^1$

素因数の和:5601

約数の個数: 16

約数和(自身を含む): 40029120

約数和(自身を除く): 20048142

約数列:

[1, 2, 3, 6, 677, 1354, 2031, 4062, 4919, 9838, 14757, 29514, 3330163, 6660326, 9990489, 19980978]

約数ペア:

[(1, 19980978), (2, 9990489), (3, 6660326), (6, 3330163), (677, 29514), (1354, 14757), (2031, 9838), (4062, 4919)]