21478695

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{337}}^1\times {\mathrm{607}}^1$

素因数の和:959

約数の個数: 32

約数和(自身を含む): 39456768

約数和(自身を除く): 17978073

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 337, 607, 1011, 1685, 1821, 2359, 3035, 4249, 5055, 7077, 9105, 11795, 12747, 21245, 35385, 63735, 204559, 613677, 1022795, 1431913, 3068385, 4295739, 7159565, 21478695]

約数ペア:

[(1, 21478695), (3, 7159565), (5, 4295739), (7, 3068385), (15, 1431913), (21, 1022795), (35, 613677), (105, 204559), (337, 63735), (607, 35385), (1011, 21245), (1685, 12747), (1821, 11795), (2359, 9105), (3035, 7077), (4249, 5055)]