28318520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{30781}}^1$

素因数の和:30815

約数の個数: 32

約数和(自身を含む): 66489120

約数和(自身を除く): 38170600

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 30781, 61562, 123124, 153905, 246248, 307810, 615620, 707963, 1231240, 1415926, 2831852, 3539815, 5663704, 7079630, 14159260, 28318520]

約数ペア:

[(1, 28318520), (2, 14159260), (4, 7079630), (5, 5663704), (8, 3539815), (10, 2831852), (20, 1415926), (23, 1231240), (40, 707963), (46, 615620), (92, 307810), (115, 246248), (184, 153905), (230, 123124), (460, 61562), (920, 30781)]