21059775

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 42092544

約数和(自身を除く): 21032769

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 67, 75, 99, 127, 165, 201, 225, 275, 335, 381, 495, 603, 635, 737, 825, 1005, 1143, 1397, 1675, 1905, 2211, 2475, 3015, 3175, 3685, 4191, 5025, 5715, 6633, 6985, 8509, 9525, 11055, 12573, 15075, 18425, 20955, 25527, 28575, 33165, 34925, 42545, 55275, 62865, 76581, 93599, 104775, 127635, 165825, 212725, 280797, 314325, 382905, 467995, 638175, 842391, 1403985, 1914525, 2339975, 4211955, 7019925, 21059775]

約数ペア:

[(1, 21059775), (3, 7019925), (5, 4211955), (9, 2339975), (11, 1914525), (15, 1403985), (25, 842391), (33, 638175), (45, 467995), (55, 382905), (67, 314325), (75, 280797), (99, 212725), (127, 165825), (165, 127635), (201, 104775), (225, 93599), (275, 76581), (335, 62865), (381, 55275), (495, 42545), (603, 34925), (635, 33165), (737, 28575), (825, 25527), (1005, 20955), (1143, 18425), (1397, 15075), (1675, 12573), (1905, 11055), (2211, 9525), (2475, 8509), (3015, 6985), (3175, 6633), (3685, 5715), (4191, 5025)]