18215990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{140123}}^1$

素因数の和:140143

約数の個数: 16

約数和(自身を含む): 35311248

約数和(自身を除く): 17095258

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 140123, 280246, 700615, 1401230, 1821599, 3643198, 9107995, 18215990]

約数ペア:

[(1, 18215990), (2, 9107995), (5, 3643198), (10, 1821599), (13, 1401230), (26, 700615), (65, 280246), (130, 140123)]