21282775

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{307}}^1$

素因数の和:423

約数の個数: 24

約数和(自身を含む): 27498240

約数和(自身を除く): 6215465

約数列:

[1, 5, 25, 47, 59, 235, 295, 307, 1175, 1475, 1535, 2773, 7675, 13865, 14429, 18113, 69325, 72145, 90565, 360725, 452825, 851311, 4256555, 21282775]

約数ペア:

[(1, 21282775), (5, 4256555), (25, 851311), (47, 452825), (59, 360725), (235, 90565), (295, 72145), (307, 69325), (1175, 18113), (1475, 14429), (1535, 13865), (2773, 7675)]