21317120

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{757}}^1$

素因数の和:791

約数の個数: 80

約数和(自身を含む): 55831248

約数和(自身を除く): 34514128

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 512, 640, 704, 757, 880, 1280, 1408, 1514, 1760, 2560, 2816, 3028, 3520, 3785, 5632, 6056, 7040, 7570, 8327, 12112, 14080, 15140, 16654, 24224, 28160, 30280, 33308, 41635, 48448, 60560, 66616, 83270, 96896, 121120, 133232, 166540, 193792, 242240, 266464, 333080, 387584, 484480, 532928, 666160, 968960, 1065856, 1332320, 1937920, 2131712, 2664640, 4263424, 5329280, 10658560, 21317120]

約数ペア:

[(1, 21317120), (2, 10658560), (4, 5329280), (5, 4263424), (8, 2664640), (10, 2131712), (11, 1937920), (16, 1332320), (20, 1065856), (22, 968960), (32, 666160), (40, 532928), (44, 484480), (55, 387584), (64, 333080), (80, 266464), (88, 242240), (110, 193792), (128, 166540), (160, 133232), (176, 121120), (220, 96896), (256, 83270), (320, 66616), (352, 60560), (440, 48448), (512, 41635), (640, 33308), (704, 30280), (757, 28160), (880, 24224), (1280, 16654), (1408, 15140), (1514, 14080), (1760, 12112), (2560, 8327), (2816, 7570), (3028, 7040), (3520, 6056), (3785, 5632)]