21291208

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{9209}}^1$

素因数の和:9249

約数の個数: 24

約数和(自身を含む): 42412050

約数和(自身を除く): 21120842

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 289, 578, 1156, 2312, 9209, 18418, 36836, 73672, 156553, 313106, 626212, 1252424, 2661401, 5322802, 10645604, 21291208]

約数ペア:

[(1, 21291208), (2, 10645604), (4, 5322802), (8, 2661401), (17, 1252424), (34, 626212), (68, 313106), (136, 156553), (289, 73672), (578, 36836), (1156, 18418), (2312, 9209)]