21124760

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{18211}}^1$

素因数の和:18251

約数の個数: 32

約数和(自身を含む): 49172400

約数和(自身を除く): 28047640

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 18211, 36422, 72844, 91055, 145688, 182110, 364220, 528119, 728440, 1056238, 2112476, 2640595, 4224952, 5281190, 10562380, 21124760]

約数ペア:

[(1, 21124760), (2, 10562380), (4, 5281190), (5, 4224952), (8, 2640595), (10, 2112476), (20, 1056238), (29, 728440), (40, 528119), (58, 364220), (116, 182110), (145, 145688), (232, 91055), (290, 72844), (580, 36422), (1160, 18211)]