21054296

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{1039}}^1$

素因数の和:1211

約数の個数: 32

約数和(自身を含む): 42120000

約数和(自身を除く): 21065704

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 149, 298, 596, 1039, 1192, 2078, 2533, 4156, 5066, 8312, 10132, 17663, 20264, 35326, 70652, 141304, 154811, 309622, 619244, 1238488, 2631787, 5263574, 10527148, 21054296]

約数ペア:

[(1, 21054296), (2, 10527148), (4, 5263574), (8, 2631787), (17, 1238488), (34, 619244), (68, 309622), (136, 154811), (149, 141304), (298, 70652), (596, 35326), (1039, 20264), (1192, 17663), (2078, 10132), (2533, 8312), (4156, 5066)]