20931170

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{161009}}^1$

素因数の和:161029

約数の個数: 16

約数和(自身を含む): 40574520

約数和(自身を除く): 19643350

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 161009, 322018, 805045, 1610090, 2093117, 4186234, 10465585, 20931170]

約数ペア:

[(1, 20931170), (2, 10465585), (5, 4186234), (10, 2093117), (13, 1610090), (26, 805045), (65, 322018), (130, 161009)]