20497618

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{5237}}^1$

素因数の和:5361

約数の個数: 16

約数和(自身を含む): 32685120

約数和(自身を除く): 12187502

約数列:

[1, 2, 19, 38, 103, 206, 1957, 3914, 5237, 10474, 99503, 199006, 539411, 1078822, 10248809, 20497618]

約数ペア:

[(1, 20497618), (2, 10248809), (19, 1078822), (38, 539411), (103, 199006), (206, 99503), (1957, 10474), (3914, 5237)]