20553953

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^2$

素因数の和:201

約数の個数: 24

約数和(自身を含む): 25934400

約数和(自身を除く): 5380447

約数列:

[1, 7, 19, 29, 73, 133, 203, 511, 551, 1387, 2117, 3857, 5329, 9709, 14819, 37303, 40223, 101251, 154541, 281561, 708757, 1081787, 2936279, 20553953]

約数ペア:

[(1, 20553953), (7, 2936279), (19, 1081787), (29, 708757), (73, 281561), (133, 154541), (203, 101251), (511, 40223), (551, 37303), (1387, 14819), (2117, 9709), (3857, 5329)]