21276770

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{991}}^1$

素因数の和:1130

約数の個数: 32

約数和(自身を含む): 40711680

約数和(自身を除く): 19434910

約数列:

[1, 2, 5, 10, 19, 38, 95, 113, 190, 226, 565, 991, 1130, 1982, 2147, 4294, 4955, 9910, 10735, 18829, 21470, 37658, 94145, 111983, 188290, 223966, 559915, 1119830, 2127677, 4255354, 10638385, 21276770]

約数ペア:

[(1, 21276770), (2, 10638385), (5, 4255354), (10, 2127677), (19, 1119830), (38, 559915), (95, 223966), (113, 188290), (190, 111983), (226, 94145), (565, 37658), (991, 21470), (1130, 18829), (1982, 10735), (2147, 9910), (4294, 4955)]