20981232

素因数分解:

$2^4\times 3^2\times {\mathrm{145703}}^1$

素因数の和:145717

約数の個数: 30

約数和(自身を含む): 58718712

約数和(自身を除く): 37737480

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 145703, 291406, 437109, 582812, 874218, 1165624, 1311327, 1748436, 2331248, 2622654, 3496872, 5245308, 6993744, 10490616, 20981232]

約数ペア:

[(1, 20981232), (2, 10490616), (3, 6993744), (4, 5245308), (6, 3496872), (8, 2622654), (9, 2331248), (12, 1748436), (16, 1311327), (18, 1165624), (24, 874218), (36, 582812), (48, 437109), (72, 291406), (144, 145703)]