20387563

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1\times {\mathrm{307}}^1$

素因数の和:546

約数の個数: 16

約数和(自身を含む): 23950080

約数和(自身を除く): 3562517

約数列:

[1, 7, 53, 179, 307, 371, 1253, 2149, 9487, 16271, 54953, 66409, 113897, 384671, 2912509, 20387563]

約数ペア:

[(1, 20387563), (7, 2912509), (53, 384671), (179, 113897), (307, 66409), (371, 54953), (1253, 16271), (2149, 9487)]