216989825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{15527}}^1$

素因数の和:15593

約数の個数: 24

約数和(自身を含む): 296522688

約数和(自身を除く): 79532863

約数列:

[1, 5, 13, 25, 43, 65, 215, 325, 559, 1075, 2795, 13975, 15527, 77635, 201851, 388175, 667661, 1009255, 3338305, 5046275, 8679593, 16691525, 43397965, 216989825]

約数ペア:

[(1, 216989825), (5, 43397965), (13, 16691525), (25, 8679593), (43, 5046275), (65, 3338305), (215, 1009255), (325, 667661), (559, 388175), (1075, 201851), (2795, 77635), (13975, 15527)]