21645855

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6247}}^1$

素因数の和:6276

約数の個数: 48

約数和(自身を含む): 46785024

約数和(自身を除く): 25139169

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 63, 77, 99, 105, 165, 231, 315, 385, 495, 693, 1155, 3465, 6247, 18741, 31235, 43729, 56223, 68717, 93705, 131187, 206151, 218645, 281115, 343585, 393561, 481019, 618453, 655935, 1030755, 1443057, 1967805, 2405095, 3092265, 4329171, 7215285, 21645855]

約数ペア:

[(1, 21645855), (3, 7215285), (5, 4329171), (7, 3092265), (9, 2405095), (11, 1967805), (15, 1443057), (21, 1030755), (33, 655935), (35, 618453), (45, 481019), (55, 393561), (63, 343585), (77, 281115), (99, 218645), (105, 206151), (165, 131187), (231, 93705), (315, 68717), (385, 56223), (495, 43729), (693, 31235), (1155, 18741), (3465, 6247)]