204920289

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{53323}}^1$

素因数の和:53397

約数の個数: 24

約数和(自身を含む): 343833152

約数和(自身を除く): 138912863

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 53323, 159969, 373261, 479907, 1119783, 3252703, 3359349, 9758109, 22768921, 29274327, 68306763, 204920289]

約数ペア:

[(1, 204920289), (3, 68306763), (7, 29274327), (9, 22768921), (21, 9758109), (61, 3359349), (63, 3252703), (183, 1119783), (427, 479907), (549, 373261), (1281, 159969), (3843, 53323)]