8772820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{281}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 21224448

約数和(自身を除く): 12451628

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 281, 446, 562, 892, 1115, 1124, 1405, 1561, 1967, 2230, 2810, 3122, 3934, 4460, 5620, 6244, 7805, 7868, 9835, 15610, 19670, 31220, 39340, 62663, 125326, 250652, 313315, 438641, 626630, 877282, 1253260, 1754564, 2193205, 4386410, 8772820]

約数ペア:

[(1, 8772820), (2, 4386410), (4, 2193205), (5, 1754564), (7, 1253260), (10, 877282), (14, 626630), (20, 438641), (28, 313315), (35, 250652), (70, 125326), (140, 62663), (223, 39340), (281, 31220), (446, 19670), (562, 15610), (892, 9835), (1115, 7868), (1124, 7805), (1405, 6244), (1561, 5620), (1967, 4460), (2230, 3934), (2810, 3122)]