21739725

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:176

約数の個数: 96

約数和(自身を含む): 47139840

約数和(自身を除く): 25400115

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 43, 45, 63, 75, 105, 107, 129, 135, 175, 189, 215, 225, 301, 315, 321, 387, 525, 535, 645, 675, 749, 903, 945, 963, 1075, 1161, 1505, 1575, 1605, 1935, 2247, 2675, 2709, 2889, 3225, 3745, 4515, 4601, 4725, 4815, 5805, 6741, 7525, 8025, 8127, 9675, 11235, 13545, 13803, 14445, 18725, 20223, 22575, 23005, 24075, 29025, 32207, 33705, 40635, 41409, 56175, 67725, 69015, 72225, 96621, 101115, 115025, 124227, 161035, 168525, 203175, 207045, 289863, 345075, 483105, 505575, 621135, 805175, 869589, 1035225, 1449315, 2415525, 3105675, 4347945, 7246575, 21739725]

約数ペア:

[(1, 21739725), (3, 7246575), (5, 4347945), (7, 3105675), (9, 2415525), (15, 1449315), (21, 1035225), (25, 869589), (27, 805175), (35, 621135), (43, 505575), (45, 483105), (63, 345075), (75, 289863), (105, 207045), (107, 203175), (129, 168525), (135, 161035), (175, 124227), (189, 115025), (215, 101115), (225, 96621), (301, 72225), (315, 69015), (321, 67725), (387, 56175), (525, 41409), (535, 40635), (645, 33705), (675, 32207), (749, 29025), (903, 24075), (945, 23005), (963, 22575), (1075, 20223), (1161, 18725), (1505, 14445), (1575, 13803), (1605, 13545), (1935, 11235), (2247, 9675), (2675, 8127), (2709, 8025), (2889, 7525), (3225, 6741), (3745, 5805), (4515, 4815), (4601, 4725)]