20054720

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{1279}}^1$

素因数の和:1310

約数の個数: 84

約数和(自身を含む): 55595520

約数和(自身を除く): 35540800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 320, 392, 448, 490, 560, 784, 980, 1120, 1279, 1568, 1960, 2240, 2558, 3136, 3920, 5116, 6395, 7840, 8953, 10232, 12790, 15680, 17906, 20464, 25580, 35812, 40928, 44765, 51160, 62671, 71624, 81856, 89530, 102320, 125342, 143248, 179060, 204640, 250684, 286496, 313355, 358120, 409280, 501368, 572992, 626710, 716240, 1002736, 1253420, 1432480, 2005472, 2506840, 2864960, 4010944, 5013680, 10027360, 20054720]

約数ペア:

[(1, 20054720), (2, 10027360), (4, 5013680), (5, 4010944), (7, 2864960), (8, 2506840), (10, 2005472), (14, 1432480), (16, 1253420), (20, 1002736), (28, 716240), (32, 626710), (35, 572992), (40, 501368), (49, 409280), (56, 358120), (64, 313355), (70, 286496), (80, 250684), (98, 204640), (112, 179060), (140, 143248), (160, 125342), (196, 102320), (224, 89530), (245, 81856), (280, 71624), (320, 62671), (392, 51160), (448, 44765), (490, 40928), (560, 35812), (784, 25580), (980, 20464), (1120, 17906), (1279, 15680), (1568, 12790), (1960, 10232), (2240, 8953), (2558, 7840), (3136, 6395), (3920, 5116)]