20393825

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:425

約数の個数: 24

約数和(自身を含む): 26385216

約数和(自身を除く): 5991391

約数列:

[1, 5, 25, 43, 61, 215, 305, 311, 1075, 1525, 1555, 2623, 7775, 13115, 13373, 18971, 65575, 66865, 94855, 334325, 474275, 815753, 4078765, 20393825]

約数ペア:

[(1, 20393825), (5, 4078765), (25, 815753), (43, 474275), (61, 334325), (215, 94855), (305, 66865), (311, 65575), (1075, 18971), (1525, 13373), (1555, 13115), (2623, 7775)]