2177788221

素因数分解:

$3^3\times 7^1\times {\mathrm{2969}}^1\times {\mathrm{3881}}^1$

素因数の和:6866

約数の個数: 32

約数和(自身を含む): 3689452800

約数和(自身を除く): 1511664579

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 2969, 3881, 8907, 11643, 20783, 26721, 27167, 34929, 62349, 80163, 81501, 104787, 187047, 244503, 561141, 733509, 11522689, 34568067, 80658823, 103704201, 241976469, 311112603, 725929407, 2177788221]

約数ペア:

[(1, 2177788221), (3, 725929407), (7, 311112603), (9, 241976469), (21, 103704201), (27, 80658823), (63, 34568067), (189, 11522689), (2969, 733509), (3881, 561141), (8907, 244503), (11643, 187047), (20783, 104787), (26721, 81501), (27167, 80163), (34929, 62349)]