18915160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42989}}^1$

素因数の和:43011

約数の個数: 32

約数和(自身を含む): 46429200

約数和(自身を除く): 27514040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 42989, 85978, 171956, 214945, 343912, 429890, 472879, 859780, 945758, 1719560, 1891516, 2364395, 3783032, 4728790, 9457580, 18915160]

約数ペア:

[(1, 18915160), (2, 9457580), (4, 4728790), (5, 3783032), (8, 2364395), (10, 1891516), (11, 1719560), (20, 945758), (22, 859780), (40, 472879), (44, 429890), (55, 343912), (88, 214945), (110, 171956), (220, 85978), (440, 42989)]