19400980

素因数分解:

$2^2\times 5^1\times {\mathrm{563}}^1\times {\mathrm{1723}}^1$

素因数の和:2295

約数の個数: 24

約数和(自身を含む): 40838112

約数和(自身を除く): 21437132

約数列:

[1, 2, 4, 5, 10, 20, 563, 1126, 1723, 2252, 2815, 3446, 5630, 6892, 8615, 11260, 17230, 34460, 970049, 1940098, 3880196, 4850245, 9700490, 19400980]

約数ペア:

[(1, 19400980), (2, 9700490), (4, 4850245), (5, 3880196), (10, 1940098), (20, 970049), (563, 34460), (1126, 17230), (1723, 11260), (2252, 8615), (2815, 6892), (3446, 5630)]