21225736

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{19949}}^1$

素因数の和:19981

約数の個数: 32

約数和(自身を含む): 47880000

約数和(自身を除く): 26654264

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 19949, 39898, 79796, 139643, 159592, 279286, 379031, 558572, 758062, 1117144, 1516124, 2653217, 3032248, 5306434, 10612868, 21225736]

約数ペア:

[(1, 21225736), (2, 10612868), (4, 5306434), (7, 3032248), (8, 2653217), (14, 1516124), (19, 1117144), (28, 758062), (38, 558572), (56, 379031), (76, 279286), (133, 159592), (152, 139643), (266, 79796), (532, 39898), (1064, 19949)]