21309548

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{1087}}^1$

素因数の和:1146

約数の個数: 36

約数和(自身を含む): 41811840

約数和(自身を除く): 20502292

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 116, 169, 338, 377, 676, 754, 1087, 1508, 2174, 4348, 4901, 9802, 14131, 19604, 28262, 31523, 56524, 63046, 126092, 183703, 367406, 409799, 734812, 819598, 1639196, 5327387, 10654774, 21309548]

約数ペア:

[(1, 21309548), (2, 10654774), (4, 5327387), (13, 1639196), (26, 819598), (29, 734812), (52, 409799), (58, 367406), (116, 183703), (169, 126092), (338, 63046), (377, 56524), (676, 31523), (754, 28262), (1087, 19604), (1508, 14131), (2174, 9802), (4348, 4901)]