21537495

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:202

約数の個数: 80

約数和(自身を含む): 45163008

約数和(自身を除く): 23625513

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 71, 81, 105, 107, 135, 189, 213, 315, 321, 355, 405, 497, 535, 567, 639, 749, 945, 963, 1065, 1491, 1605, 1917, 2247, 2485, 2835, 2889, 3195, 3745, 4473, 4815, 5751, 6741, 7455, 7597, 8667, 9585, 11235, 13419, 14445, 20223, 22365, 22791, 28755, 33705, 37985, 40257, 43335, 53179, 60669, 67095, 68373, 101115, 113955, 159537, 201285, 205119, 265895, 303345, 341865, 478611, 615357, 797685, 1025595, 1435833, 2393055, 3076785, 4307499, 7179165, 21537495]

約数ペア:

[(1, 21537495), (3, 7179165), (5, 4307499), (7, 3076785), (9, 2393055), (15, 1435833), (21, 1025595), (27, 797685), (35, 615357), (45, 478611), (63, 341865), (71, 303345), (81, 265895), (105, 205119), (107, 201285), (135, 159537), (189, 113955), (213, 101115), (315, 68373), (321, 67095), (355, 60669), (405, 53179), (497, 43335), (535, 40257), (567, 37985), (639, 33705), (749, 28755), (945, 22791), (963, 22365), (1065, 20223), (1491, 14445), (1605, 13419), (1917, 11235), (2247, 9585), (2485, 8667), (2835, 7597), (2889, 7455), (3195, 6741), (3745, 5751), (4473, 4815)]