21782025

素因数分解:

$3^2\times 5^2\times {\mathrm{131}}^1\times {\mathrm{739}}^1$

素因数の和:886

約数の個数: 36

約数和(自身を含む): 39365040

約数和(自身を除く): 17583015

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 131, 225, 393, 655, 739, 1179, 1965, 2217, 3275, 3695, 5895, 6651, 9825, 11085, 18475, 29475, 33255, 55425, 96809, 166275, 290427, 484045, 871281, 1452135, 2420225, 4356405, 7260675, 21782025]

約数ペア:

[(1, 21782025), (3, 7260675), (5, 4356405), (9, 2420225), (15, 1452135), (25, 871281), (45, 484045), (75, 290427), (131, 166275), (225, 96809), (393, 55425), (655, 33255), (739, 29475), (1179, 18475), (1965, 11085), (2217, 9825), (3275, 6651), (3695, 5895)]