21000456807

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{563}}^1\times {\mathrm{38977}}^1$

素因数の和:39583

約数の個数: 32

約数和(自身を含む): 31656372480

約数和(自身を除く): 10655915673

約数列:

[1, 3, 11, 29, 33, 87, 319, 563, 957, 1689, 6193, 16327, 18579, 38977, 48981, 116931, 179597, 428747, 538791, 1130333, 1286241, 3390999, 12433663, 21944051, 37300989, 65832153, 241384561, 636377479, 724153683, 1909132437, 7000152269, 21000456807]

約数ペア:

[(1, 21000456807), (3, 7000152269), (11, 1909132437), (29, 724153683), (33, 636377479), (87, 241384561), (319, 65832153), (563, 37300989), (957, 21944051), (1689, 12433663), (6193, 3390999), (16327, 1286241), (18579, 1130333), (38977, 538791), (48981, 428747), (116931, 179597)]