209531475

素因数分解:

$3^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{7219}}^1$

素因数の和:7281

約数の個数: 48

約数和(自身を含む): 393923200

約数和(自身を除く): 184391725

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 129, 135, 215, 225, 387, 645, 675, 1075, 1161, 1935, 3225, 5805, 7219, 9675, 21657, 29025, 36095, 64971, 108285, 180475, 194913, 310417, 324855, 541425, 931251, 974565, 1552085, 1624275, 2793753, 4656255, 4872825, 7760425, 8381259, 13968765, 23281275, 41906295, 69843825, 209531475]

約数ペア:

[(1, 209531475), (3, 69843825), (5, 41906295), (9, 23281275), (15, 13968765), (25, 8381259), (27, 7760425), (43, 4872825), (45, 4656255), (75, 2793753), (129, 1624275), (135, 1552085), (215, 974565), (225, 931251), (387, 541425), (645, 324855), (675, 310417), (1075, 194913), (1161, 180475), (1935, 108285), (3225, 64971), (5805, 36095), (7219, 29025), (9675, 21657)]