18991966

素因数分解:

$2^1\times 7^1\times {\mathrm{613}}^1\times {\mathrm{2213}}^1$

素因数の和:2835

約数の個数: 16

約数和(自身を含む): 32625504

約数和(自身を除く): 13633538

約数列:

[1, 2, 7, 14, 613, 1226, 2213, 4291, 4426, 8582, 15491, 30982, 1356569, 2713138, 9495983, 18991966]

約数ペア:

[(1, 18991966), (2, 9495983), (7, 2713138), (14, 1356569), (613, 30982), (1226, 15491), (2213, 8582), (4291, 4426)]