20982915

素因数分解:

$3^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{3307}}^1$

素因数の和:3368

約数の個数: 32

約数和(自身を含む): 38108160

約数和(自身を除く): 17125245

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 135, 141, 235, 423, 705, 1269, 2115, 3307, 6345, 9921, 16535, 29763, 49605, 89289, 148815, 155429, 446445, 466287, 777145, 1398861, 2331435, 4196583, 6994305, 20982915]

約数ペア:

[(1, 20982915), (3, 6994305), (5, 4196583), (9, 2331435), (15, 1398861), (27, 777145), (45, 466287), (47, 446445), (135, 155429), (141, 148815), (235, 89289), (423, 49605), (705, 29763), (1269, 16535), (2115, 9921), (3307, 6345)]