18953997

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{2837}}^1$

素因数の和:2988

約数の個数: 16

約数和(自身を含む): 26972352

約数和(自身を除く): 8018355

約数列:

[1, 3, 17, 51, 131, 393, 2227, 2837, 6681, 8511, 48229, 144687, 371647, 1114941, 6317999, 18953997]

約数ペア:

[(1, 18953997), (3, 6317999), (17, 1114941), (51, 371647), (131, 144687), (393, 48229), (2227, 8511), (2837, 6681)]