20480955

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:224

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 18226245

約数列:

[1, 3, 5, 11, 15, 19, 33, 47, 55, 57, 95, 139, 141, 165, 209, 235, 285, 417, 517, 627, 695, 705, 893, 1045, 1529, 1551, 2085, 2585, 2641, 2679, 3135, 4465, 4587, 6533, 7645, 7755, 7923, 9823, 13205, 13395, 19599, 22935, 29051, 29469, 32665, 39615, 49115, 71863, 87153, 97995, 124127, 145255, 147345, 215589, 359315, 372381, 435765, 620635, 1077945, 1365397, 1861905, 4096191, 6826985, 20480955]

約数ペア:

[(1, 20480955), (3, 6826985), (5, 4096191), (11, 1861905), (15, 1365397), (19, 1077945), (33, 620635), (47, 435765), (55, 372381), (57, 359315), (95, 215589), (139, 147345), (141, 145255), (165, 124127), (209, 97995), (235, 87153), (285, 71863), (417, 49115), (517, 39615), (627, 32665), (695, 29469), (705, 29051), (893, 22935), (1045, 19599), (1529, 13395), (1551, 13205), (2085, 9823), (2585, 7923), (2641, 7755), (2679, 7645), (3135, 6533), (4465, 4587)]