18640269

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{941}}^1$

素因数の和:1049

約数の個数: 24

約数和(自身を含む): 28214784

約数和(自身を除く): 9574515

約数列:

[1, 3, 9, 31, 71, 93, 213, 279, 639, 941, 2201, 2823, 6603, 8469, 19809, 29171, 66811, 87513, 200433, 262539, 601299, 2071141, 6213423, 18640269]

約数ペア:

[(1, 18640269), (3, 6213423), (9, 2071141), (31, 601299), (71, 262539), (93, 200433), (213, 87513), (279, 66811), (639, 29171), (941, 19809), (2201, 8469), (2823, 6603)]