20909488

素因数分解:

$2^4\times {\mathrm{137}}^1\times {\mathrm{9539}}^1$

素因数の和:9684

約数の個数: 20

約数和(自身を含む): 40812120

約数和(自身を除く): 19902632

約数列:

[1, 2, 4, 8, 16, 137, 274, 548, 1096, 2192, 9539, 19078, 38156, 76312, 152624, 1306843, 2613686, 5227372, 10454744, 20909488]

約数ペア:

[(1, 20909488), (2, 10454744), (4, 5227372), (8, 2613686), (16, 1306843), (137, 152624), (274, 76312), (548, 38156), (1096, 19078), (2192, 9539)]