21487269

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{193}}^1$

素因数の和:309

約数の個数: 32

約数和(自身を含む): 31847040

約数和(自身を除く): 10359771

約数列:

[1, 3, 17, 37, 51, 59, 111, 177, 193, 579, 629, 1003, 1887, 2183, 3009, 3281, 6549, 7141, 9843, 11387, 21423, 34161, 37111, 111333, 121397, 193579, 364191, 421319, 580737, 1263957, 7162423, 21487269]

約数ペア:

[(1, 21487269), (3, 7162423), (17, 1263957), (37, 580737), (51, 421319), (59, 364191), (111, 193579), (177, 121397), (193, 111333), (579, 37111), (629, 34161), (1003, 21423), (1887, 11387), (2183, 9843), (3009, 7141), (3281, 6549)]