25405520

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{6481}}^1$

素因数の和:6508

約数の個数: 60

約数和(自身を含む): 68722164

約数和(自身を除く): 43316644

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 6481, 12962, 25924, 32405, 45367, 51848, 64810, 90734, 103696, 129620, 181468, 226835, 259240, 317569, 362936, 453670, 518480, 635138, 725872, 907340, 1270276, 1587845, 1814680, 2540552, 3175690, 3629360, 5081104, 6351380, 12702760, 25405520]

約数ペア:

[(1, 25405520), (2, 12702760), (4, 6351380), (5, 5081104), (7, 3629360), (8, 3175690), (10, 2540552), (14, 1814680), (16, 1587845), (20, 1270276), (28, 907340), (35, 725872), (40, 635138), (49, 518480), (56, 453670), (70, 362936), (80, 317569), (98, 259240), (112, 226835), (140, 181468), (196, 129620), (245, 103696), (280, 90734), (392, 64810), (490, 51848), (560, 45367), (784, 32405), (980, 25924), (1960, 12962), (3920, 6481)]