18688761

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1201}}^1$

素因数の和:1246

約数の個数: 48

約数和(自身を含む): 35002240

約数和(自身を除く): 16313479

約数列:

[1, 3, 7, 9, 13, 19, 21, 39, 57, 63, 91, 117, 133, 171, 247, 273, 399, 741, 819, 1197, 1201, 1729, 2223, 3603, 5187, 8407, 10809, 15561, 15613, 22819, 25221, 46839, 68457, 75663, 109291, 140517, 159733, 205371, 296647, 327873, 479199, 889941, 983619, 1437597, 2076529, 2669823, 6229587, 18688761]

約数ペア:

[(1, 18688761), (3, 6229587), (7, 2669823), (9, 2076529), (13, 1437597), (19, 983619), (21, 889941), (39, 479199), (57, 327873), (63, 296647), (91, 205371), (117, 159733), (133, 140517), (171, 109291), (247, 75663), (273, 68457), (399, 46839), (741, 25221), (819, 22819), (1197, 15613), (1201, 15561), (1729, 10809), (2223, 8407), (3603, 5187)]