19968156

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{42667}}^1$

素因数の和:42690

約数の個数: 36

約数和(自身を含む): 54359032

約数和(自身を除く): 34390876

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 42667, 85334, 128001, 170668, 256002, 384003, 512004, 554671, 768006, 1109342, 1536012, 1664013, 2218684, 3328026, 4992039, 6656052, 9984078, 19968156]

約数ペア:

[(1, 19968156), (2, 9984078), (3, 6656052), (4, 4992039), (6, 3328026), (9, 2218684), (12, 1664013), (13, 1536012), (18, 1109342), (26, 768006), (36, 554671), (39, 512004), (52, 384003), (78, 256002), (117, 170668), (156, 128001), (234, 85334), (468, 42667)]