20449947

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{479}}^1$

素因数の和:615

約数の個数: 32

約数和(自身を含む): 33177600

約数和(自身を除く): 12727653

約数列:

[1, 3, 7, 19, 21, 57, 107, 133, 321, 399, 479, 749, 1437, 2033, 2247, 3353, 6099, 9101, 10059, 14231, 27303, 42693, 51253, 63707, 153759, 191121, 358771, 973807, 1076313, 2921421, 6816649, 20449947]

約数ペア:

[(1, 20449947), (3, 6816649), (7, 2921421), (19, 1076313), (21, 973807), (57, 358771), (107, 191121), (133, 153759), (321, 63707), (399, 51253), (479, 42693), (749, 27303), (1437, 14231), (2033, 10059), (2247, 9101), (3353, 6099)]