640495520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{571871}}^1$

素因数の和:571893

約数の個数: 48

約数和(自身を含む): 1729340928

約数和(自身を除く): 1088845408

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 571871, 1143742, 2287484, 2859355, 4003097, 4574968, 5718710, 8006194, 9149936, 11437420, 16012388, 18299872, 20015485, 22874840, 32024776, 40030970, 45749680, 64049552, 80061940, 91499360, 128099104, 160123880, 320247760, 640495520]

約数ペア:

[(1, 640495520), (2, 320247760), (4, 160123880), (5, 128099104), (7, 91499360), (8, 80061940), (10, 64049552), (14, 45749680), (16, 40030970), (20, 32024776), (28, 22874840), (32, 20015485), (35, 18299872), (40, 16012388), (56, 11437420), (70, 9149936), (80, 8006194), (112, 5718710), (140, 4574968), (160, 4003097), (224, 2859355), (280, 2287484), (560, 1143742), (1120, 571871)]