20931075

素因数分解:

$3^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{2819}}^1$

素因数の和:2849

約数の個数: 48

約数和(自身を含む): 41961600

約数和(自身を除く): 21030525

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 99, 135, 165, 225, 275, 297, 495, 675, 825, 1485, 2475, 2819, 7425, 8457, 14095, 25371, 31009, 42285, 70475, 76113, 93027, 126855, 155045, 211425, 279081, 380565, 465135, 634275, 775225, 837243, 1395405, 1902825, 2325675, 4186215, 6977025, 20931075]

約数ペア:

[(1, 20931075), (3, 6977025), (5, 4186215), (9, 2325675), (11, 1902825), (15, 1395405), (25, 837243), (27, 775225), (33, 634275), (45, 465135), (55, 380565), (75, 279081), (99, 211425), (135, 155045), (165, 126855), (225, 93027), (275, 76113), (297, 70475), (495, 42285), (675, 31009), (825, 25371), (1485, 14095), (2475, 8457), (2819, 7425)]