18918015

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1619}}^1$

素因数の和:1687

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 13741185

約数列:

[1, 3, 5, 15, 19, 41, 57, 95, 123, 205, 285, 615, 779, 1619, 2337, 3895, 4857, 8095, 11685, 24285, 30761, 66379, 92283, 153805, 199137, 331895, 461415, 995685, 1261201, 3783603, 6306005, 18918015]

約数ペア:

[(1, 18918015), (3, 6306005), (5, 3783603), (15, 1261201), (19, 995685), (41, 461415), (57, 331895), (95, 199137), (123, 153805), (205, 92283), (285, 66379), (615, 30761), (779, 24285), (1619, 11685), (2337, 8095), (3895, 4857)]