281567289

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{199}}^1\times {\mathrm{241}}^1$

素因数の和:565

約数の個数: 32

約数和(自身を含む): 402688000

約数和(自身を除く): 121120711

約数列:

[1, 3, 19, 57, 103, 199, 241, 309, 597, 723, 1957, 3781, 4579, 5871, 11343, 13737, 20497, 24823, 47959, 61491, 74469, 143877, 389443, 471637, 911221, 1168329, 1414911, 2733663, 4939777, 14819331, 93855763, 281567289]

約数ペア:

[(1, 281567289), (3, 93855763), (19, 14819331), (57, 4939777), (103, 2733663), (199, 1414911), (241, 1168329), (309, 911221), (597, 471637), (723, 389443), (1957, 143877), (3781, 74469), (4579, 61491), (5871, 47959), (11343, 24823), (13737, 20497)]