20856316

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{5077}}^1$

素因数の和:5173

約数の個数: 24

約数和(自身を含む): 39811520

約数和(自身を除く): 18955204

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 316, 1027, 2054, 4108, 5077, 10154, 20308, 66001, 132002, 264004, 401083, 802166, 1604332, 5214079, 10428158, 20856316]

約数ペア:

[(1, 20856316), (2, 10428158), (4, 5214079), (13, 1604332), (26, 802166), (52, 401083), (79, 264004), (158, 132002), (316, 66001), (1027, 20308), (2054, 10154), (4108, 5077)]