20863815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4621}}^1$

素因数の和:4679

約数の個数: 32

約数和(自身を含む): 39046656

約数和(自身を除く): 18182841

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 105, 129, 215, 301, 645, 903, 1505, 4515, 4621, 13863, 23105, 32347, 69315, 97041, 161735, 198703, 485205, 596109, 993515, 1390921, 2980545, 4172763, 6954605, 20863815]

約数ペア:

[(1, 20863815), (3, 6954605), (5, 4172763), (7, 2980545), (15, 1390921), (21, 993515), (35, 596109), (43, 485205), (105, 198703), (129, 161735), (215, 97041), (301, 69315), (645, 32347), (903, 23105), (1505, 13863), (4515, 4621)]