78909940

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{49943}}^1$

素因数の和:50031

約数の個数: 24

約数和(自身を含む): 167811840

約数和(自身を除く): 88901900

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 49943, 99886, 199772, 249715, 499430, 998860, 3945497, 7890994, 15781988, 19727485, 39454970, 78909940]

約数ペア:

[(1, 78909940), (2, 39454970), (4, 19727485), (5, 15781988), (10, 7890994), (20, 3945497), (79, 998860), (158, 499430), (316, 249715), (395, 199772), (790, 99886), (1580, 49943)]