21148672

素因数分解:

$2^{10}\times {\mathrm{19}}^1\times {\mathrm{1087}}^1$

素因数の和:1126

約数の個数: 44

約数和(自身を含む): 44542720

約数和(自身を除く): 23394048

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 256, 304, 512, 608, 1024, 1087, 1216, 2174, 2432, 4348, 4864, 8696, 9728, 17392, 19456, 20653, 34784, 41306, 69568, 82612, 139136, 165224, 278272, 330448, 556544, 660896, 1113088, 1321792, 2643584, 5287168, 10574336, 21148672]

約数ペア:

[(1, 21148672), (2, 10574336), (4, 5287168), (8, 2643584), (16, 1321792), (19, 1113088), (32, 660896), (38, 556544), (64, 330448), (76, 278272), (128, 165224), (152, 139136), (256, 82612), (304, 69568), (512, 41306), (608, 34784), (1024, 20653), (1087, 19456), (1216, 17392), (2174, 9728), (2432, 8696), (4348, 4864)]