19609040

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22283}}^1$

素因数の和:22307

約数の個数: 40

約数和(自身を含む): 49737888

約数和(自身を除く): 30128848

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22283, 44566, 89132, 111415, 178264, 222830, 245113, 356528, 445660, 490226, 891320, 980452, 1225565, 1782640, 1960904, 2451130, 3921808, 4902260, 9804520, 19609040]

約数ペア:

[(1, 19609040), (2, 9804520), (4, 4902260), (5, 3921808), (8, 2451130), (10, 1960904), (11, 1782640), (16, 1225565), (20, 980452), (22, 891320), (40, 490226), (44, 445660), (55, 356528), (80, 245113), (88, 222830), (110, 178264), (176, 111415), (220, 89132), (440, 44566), (880, 22283)]