21121854

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{937}}^1$

素因数の和:989

約数の個数: 48

約数和(自身を含む): 48378288

約数和(自身を除く): 27256434

約数列:

[1, 2, 3, 6, 13, 17, 26, 34, 39, 51, 78, 102, 221, 289, 442, 578, 663, 867, 937, 1326, 1734, 1874, 2811, 3757, 5622, 7514, 11271, 12181, 15929, 22542, 24362, 31858, 36543, 47787, 73086, 95574, 207077, 270793, 414154, 541586, 621231, 812379, 1242462, 1624758, 3520309, 7040618, 10560927, 21121854]

約数ペア:

[(1, 21121854), (2, 10560927), (3, 7040618), (6, 3520309), (13, 1624758), (17, 1242462), (26, 812379), (34, 621231), (39, 541586), (51, 414154), (78, 270793), (102, 207077), (221, 95574), (289, 73086), (442, 47787), (578, 36543), (663, 31858), (867, 24362), (937, 22542), (1326, 15929), (1734, 12181), (1874, 11271), (2811, 7514), (3757, 5622)]