21958365

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{353}}^1$

素因数の和:414

約数の個数: 64

約数和(自身を含む): 42819840

約数和(自身を除く): 20861475

約数列:

[1, 3, 5, 11, 13, 15, 29, 33, 39, 55, 65, 87, 143, 145, 165, 195, 319, 353, 377, 429, 435, 715, 957, 1059, 1131, 1595, 1765, 1885, 2145, 3883, 4147, 4589, 4785, 5295, 5655, 10237, 11649, 12441, 13767, 19415, 20735, 22945, 30711, 50479, 51185, 58245, 62205, 68835, 112607, 133081, 151437, 153555, 252395, 337821, 399243, 563035, 665405, 757185, 1463891, 1689105, 1996215, 4391673, 7319455, 21958365]

約数ペア:

[(1, 21958365), (3, 7319455), (5, 4391673), (11, 1996215), (13, 1689105), (15, 1463891), (29, 757185), (33, 665405), (39, 563035), (55, 399243), (65, 337821), (87, 252395), (143, 153555), (145, 151437), (165, 133081), (195, 112607), (319, 68835), (353, 62205), (377, 58245), (429, 51185), (435, 50479), (715, 30711), (957, 22945), (1059, 20735), (1131, 19415), (1595, 13767), (1765, 12441), (1885, 11649), (2145, 10237), (3883, 5655), (4147, 5295), (4589, 4785)]