280866560

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{16879}}^1$

素因数の和:16913

約数の個数: 72

約数和(自身を含む): 724557120

約数和(自身を除く): 443690560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 2080, 3328, 4160, 8320, 16640, 16879, 33758, 67516, 84395, 135032, 168790, 219427, 270064, 337580, 438854, 540128, 675160, 877708, 1080256, 1097135, 1350320, 1755416, 2160512, 2194270, 2700640, 3510832, 4321024, 4388540, 5401280, 7021664, 8777080, 10802560, 14043328, 17554160, 21605120, 28086656, 35108320, 56173312, 70216640, 140433280, 280866560]

約数ペア:

[(1, 280866560), (2, 140433280), (4, 70216640), (5, 56173312), (8, 35108320), (10, 28086656), (13, 21605120), (16, 17554160), (20, 14043328), (26, 10802560), (32, 8777080), (40, 7021664), (52, 5401280), (64, 4388540), (65, 4321024), (80, 3510832), (104, 2700640), (128, 2194270), (130, 2160512), (160, 1755416), (208, 1350320), (256, 1097135), (260, 1080256), (320, 877708), (416, 675160), (520, 540128), (640, 438854), (832, 337580), (1040, 270064), (1280, 219427), (1664, 168790), (2080, 135032), (3328, 84395), (4160, 67516), (8320, 33758), (16640, 16879)]