18881140

素因数分解:

$2^2\times 5^1\times {\mathrm{463}}^1\times {\mathrm{2039}}^1$

素因数の和:2511

約数の個数: 24

約数和(自身を含む): 39755520

約数和(自身を除く): 20874380

約数列:

[1, 2, 4, 5, 10, 20, 463, 926, 1852, 2039, 2315, 4078, 4630, 8156, 9260, 10195, 20390, 40780, 944057, 1888114, 3776228, 4720285, 9440570, 18881140]

約数ペア:

[(1, 18881140), (2, 9440570), (4, 4720285), (5, 3776228), (10, 1888114), (20, 944057), (463, 40780), (926, 20390), (1852, 10195), (2039, 9260), (2315, 8156), (4078, 4630)]