18898215

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{853}}^1$

素因数の和:1079

約数の個数: 32

約数和(自身を含む): 34761216

約数和(自身を除く): 15863001

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 211, 633, 853, 1055, 1477, 2559, 3165, 4265, 4431, 5971, 7385, 12795, 17913, 22155, 29855, 89565, 179983, 539949, 899915, 1259881, 2699745, 3779643, 6299405, 18898215]

約数ペア:

[(1, 18898215), (3, 6299405), (5, 3779643), (7, 2699745), (15, 1259881), (21, 899915), (35, 539949), (105, 179983), (211, 89565), (633, 29855), (853, 22155), (1055, 17913), (1477, 12795), (2559, 7385), (3165, 5971), (4265, 4431)]