19780490

素因数分解:

$2^1\times 5^1\times {\mathrm{1367}}^1\times {\mathrm{1447}}^1$

素因数の和:2821

約数の個数: 16

約数和(自身を含む): 35655552

約数和(自身を除く): 15875062

約数列:

[1, 2, 5, 10, 1367, 1447, 2734, 2894, 6835, 7235, 13670, 14470, 1978049, 3956098, 9890245, 19780490]

約数ペア:

[(1, 19780490), (2, 9890245), (5, 3956098), (10, 1978049), (1367, 14470), (1447, 13670), (2734, 7235), (2894, 6835)]