20716815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{1033}}^1$

素因数の和:1239

約数の個数: 32

約数和(自身を含む): 38117376

約数和(自身を除く): 17400561

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 191, 573, 955, 1033, 1337, 2865, 3099, 4011, 5165, 6685, 7231, 15495, 20055, 21693, 36155, 108465, 197303, 591909, 986515, 1381121, 2959545, 4143363, 6905605, 20716815]

約数ペア:

[(1, 20716815), (3, 6905605), (5, 4143363), (7, 2959545), (15, 1381121), (21, 986515), (35, 591909), (105, 197303), (191, 108465), (573, 36155), (955, 21693), (1033, 20055), (1337, 15495), (2865, 7231), (3099, 6685), (4011, 5165)]