20904465

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1789}}^1$

素因数の和:1857

約数の個数: 32

約数和(自身を含む): 36086400

約数和(自身を除く): 15181935

約数列:

[1, 3, 5, 15, 19, 41, 57, 95, 123, 205, 285, 615, 779, 1789, 2337, 3895, 5367, 8945, 11685, 26835, 33991, 73349, 101973, 169955, 220047, 366745, 509865, 1100235, 1393631, 4180893, 6968155, 20904465]

約数ペア:

[(1, 20904465), (3, 6968155), (5, 4180893), (15, 1393631), (19, 1100235), (41, 509865), (57, 366745), (95, 220047), (123, 169955), (205, 101973), (285, 73349), (615, 33991), (779, 26835), (1789, 11685), (2337, 8945), (3895, 5367)]