21306615

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{929}}^1$

素因数の和:1087

約数の個数: 32

約数和(自身を含む): 37497600

約数和(自身を除く): 16190985

約数列:

[1, 3, 5, 11, 15, 33, 55, 139, 165, 417, 695, 929, 1529, 2085, 2787, 4587, 4645, 7645, 10219, 13935, 22935, 30657, 51095, 129131, 153285, 387393, 645655, 1420441, 1936965, 4261323, 7102205, 21306615]

約数ペア:

[(1, 21306615), (3, 7102205), (5, 4261323), (11, 1936965), (15, 1420441), (33, 645655), (55, 387393), (139, 153285), (165, 129131), (417, 51095), (695, 30657), (929, 22935), (1529, 13935), (2085, 10219), (2787, 7645), (4587, 4645)]