20940980

素因数分解:

$2^2\times 5^1\times {\mathrm{617}}^1\times {\mathrm{1697}}^1$

素因数の和:2323

約数の個数: 24

約数和(自身を含む): 44073288

約数和(自身を除く): 23132308

約数列:

[1, 2, 4, 5, 10, 20, 617, 1234, 1697, 2468, 3085, 3394, 6170, 6788, 8485, 12340, 16970, 33940, 1047049, 2094098, 4188196, 5235245, 10470490, 20940980]

約数ペア:

[(1, 20940980), (2, 10470490), (4, 5235245), (5, 4188196), (10, 2094098), (20, 1047049), (617, 33940), (1234, 16970), (1697, 12340), (2468, 8485), (3085, 6788), (3394, 6170)]