19818640

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{10771}}^1$

素因数の和:10807

約数の個数: 40

約数和(自身を含む): 48086208

約数和(自身を除く): 28267568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 10771, 21542, 43084, 53855, 86168, 107710, 172336, 215420, 247733, 430840, 495466, 861680, 990932, 1238665, 1981864, 2477330, 3963728, 4954660, 9909320, 19818640]

約数ペア:

[(1, 19818640), (2, 9909320), (4, 4954660), (5, 3963728), (8, 2477330), (10, 1981864), (16, 1238665), (20, 990932), (23, 861680), (40, 495466), (46, 430840), (80, 247733), (92, 215420), (115, 172336), (184, 107710), (230, 86168), (368, 53855), (460, 43084), (920, 21542), (1840, 10771)]