19089189

素因数分解:

$3^4\times 7^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:407

約数の個数: 40

約数和(自身を含む): 32966208

約数和(自身を除く): 13877019

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 131, 189, 257, 393, 567, 771, 917, 1179, 1799, 2313, 2751, 3537, 5397, 6939, 8253, 10611, 16191, 20817, 24759, 33667, 48573, 74277, 101001, 145719, 235669, 303003, 707007, 909009, 2121021, 2727027, 6363063, 19089189]

約数ペア:

[(1, 19089189), (3, 6363063), (7, 2727027), (9, 2121021), (21, 909009), (27, 707007), (63, 303003), (81, 235669), (131, 145719), (189, 101001), (257, 74277), (393, 48573), (567, 33667), (771, 24759), (917, 20817), (1179, 16191), (1799, 10611), (2313, 8253), (2751, 6939), (3537, 5397)]