2169080

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{257}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 4922640

約数和(自身を除く): 2753560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 257, 422, 514, 844, 1028, 1055, 1285, 1688, 2056, 2110, 2570, 4220, 5140, 8440, 10280, 54227, 108454, 216908, 271135, 433816, 542270, 1084540, 2169080]

約数ペア:

[(1, 2169080), (2, 1084540), (4, 542270), (5, 433816), (8, 271135), (10, 216908), (20, 108454), (40, 54227), (211, 10280), (257, 8440), (422, 5140), (514, 4220), (844, 2570), (1028, 2110), (1055, 2056), (1285, 1688)]