18826880

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1279}}^1$

素因数の和:1321

約数の個数: 64

約数和(自身を含む): 47001600

約数和(自身を除く): 28174720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 920, 1279, 1472, 1840, 2558, 2944, 3680, 5116, 6395, 7360, 10232, 12790, 14720, 20464, 25580, 29417, 40928, 51160, 58834, 81856, 102320, 117668, 147085, 163712, 204640, 235336, 294170, 409280, 470672, 588340, 818560, 941344, 1176680, 1882688, 2353360, 3765376, 4706720, 9413440, 18826880]

約数ペア:

[(1, 18826880), (2, 9413440), (4, 4706720), (5, 3765376), (8, 2353360), (10, 1882688), (16, 1176680), (20, 941344), (23, 818560), (32, 588340), (40, 470672), (46, 409280), (64, 294170), (80, 235336), (92, 204640), (115, 163712), (128, 147085), (160, 117668), (184, 102320), (230, 81856), (320, 58834), (368, 51160), (460, 40928), (640, 29417), (736, 25580), (920, 20464), (1279, 14720), (1472, 12790), (1840, 10232), (2558, 7360), (2944, 6395), (3680, 5116)]