21538533

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{2111}}^1$

素因数の和:2312

約数の個数: 16

約数和(自身を含む): 30412800

約数和(自身を除く): 8874267

約数列:

[1, 3, 19, 57, 179, 537, 2111, 3401, 6333, 10203, 40109, 120327, 377869, 1133607, 7179511, 21538533]

約数ペア:

[(1, 21538533), (3, 7179511), (19, 1133607), (57, 377869), (179, 120327), (537, 40109), (2111, 10203), (3401, 6333)]