28126720

素因数分解:

$2^9\times 5^1\times {\mathrm{10987}}^1$

素因数の和:11010

約数の個数: 40

約数和(自身を含む): 67444344

約数和(自身を除く): 39317624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 10987, 21974, 43948, 54935, 87896, 109870, 175792, 219740, 351584, 439480, 703168, 878960, 1406336, 1757920, 2812672, 3515840, 5625344, 7031680, 14063360, 28126720]

約数ペア:

[(1, 28126720), (2, 14063360), (4, 7031680), (5, 5625344), (8, 3515840), (10, 2812672), (16, 1757920), (20, 1406336), (32, 878960), (40, 703168), (64, 439480), (80, 351584), (128, 219740), (160, 175792), (256, 109870), (320, 87896), (512, 54935), (640, 43948), (1280, 21974), (2560, 10987)]