28807480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55399}}^1$

素因数の和:55423

約数の個数: 32

約数和(自身を含む): 69804000

約数和(自身を除く): 40996520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 55399, 110798, 221596, 276995, 443192, 553990, 720187, 1107980, 1440374, 2215960, 2880748, 3600935, 5761496, 7201870, 14403740, 28807480]

約数ペア:

[(1, 28807480), (2, 14403740), (4, 7201870), (5, 5761496), (8, 3600935), (10, 2880748), (13, 2215960), (20, 1440374), (26, 1107980), (40, 720187), (52, 553990), (65, 443192), (104, 276995), (130, 221596), (260, 110798), (520, 55399)]