18931825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1601}}^1$

素因数の和:1665

約数の個数: 24

約数和(自身を含む): 26221536

約数和(自身を除く): 7289711

約数列:

[1, 5, 11, 25, 43, 55, 215, 275, 473, 1075, 1601, 2365, 8005, 11825, 17611, 40025, 68843, 88055, 344215, 440275, 757273, 1721075, 3786365, 18931825]

約数ペア:

[(1, 18931825), (5, 3786365), (11, 1721075), (25, 757273), (43, 440275), (55, 344215), (215, 88055), (275, 68843), (473, 40025), (1075, 17611), (1601, 11825), (2365, 8005)]