20972030

素因数分解:

$2^1\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{1627}}^1$

素因数の和:2923

約数の個数: 16

約数和(自身を含む): 37802160

約数和(自身を除く): 16830130

約数列:

[1, 2, 5, 10, 1289, 1627, 2578, 3254, 6445, 8135, 12890, 16270, 2097203, 4194406, 10486015, 20972030]

約数ペア:

[(1, 20972030), (2, 10486015), (5, 4194406), (10, 2097203), (1289, 16270), (1627, 12890), (2578, 8135), (3254, 6445)]