20400053290

素因数分解:

$2^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{10355357}}^1$

素因数の和:10355561

約数の個数: 16

約数和(自身を含む): 36906495912

約数和(自身を除く): 16506442622

約数列:

[1, 2, 5, 10, 197, 394, 985, 1970, 10355357, 20710714, 51776785, 103553570, 2040005329, 4080010658, 10200026645, 20400053290]

約数ペア:

[(1, 20400053290), (2, 10200026645), (5, 4080010658), (10, 2040005329), (197, 103553570), (394, 51776785), (985, 20710714), (1970, 10355357)]