209995885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{1951}}^1$

素因数の和:2089

約数の個数: 32

約数和(自身を含む): 292331520

約数和(自身を除く): 82335635

約数列:

[1, 5, 11, 19, 55, 95, 103, 209, 515, 1045, 1133, 1951, 1957, 5665, 9755, 9785, 21461, 21527, 37069, 107305, 107635, 185345, 200953, 407759, 1004765, 2038795, 2210483, 3818107, 11052415, 19090535, 41999177, 209995885]

約数ペア:

[(1, 209995885), (5, 41999177), (11, 19090535), (19, 11052415), (55, 3818107), (95, 2210483), (103, 2038795), (209, 1004765), (515, 407759), (1045, 200953), (1133, 185345), (1951, 107635), (1957, 107305), (5665, 37069), (9755, 21527), (9785, 21461)]