21528441

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{373}}^1$

素因数の和:454

約数の個数: 36

約数和(自身を含む): 34918884

約数和(自身を除く): 13390443

約数列:

[1, 3, 9, 11, 33, 53, 99, 121, 159, 363, 373, 477, 583, 1089, 1119, 1749, 3357, 4103, 5247, 6413, 12309, 19239, 19769, 36927, 45133, 57717, 59307, 135399, 177921, 217459, 406197, 652377, 1957131, 2392049, 7176147, 21528441]

約数ペア:

[(1, 21528441), (3, 7176147), (9, 2392049), (11, 1957131), (33, 652377), (53, 406197), (99, 217459), (121, 177921), (159, 135399), (363, 59307), (373, 57717), (477, 45133), (583, 36927), (1089, 19769), (1119, 19239), (1749, 12309), (3357, 6413), (4103, 5247)]