20691760

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13613}}^1$

素因数の和:13645

約数の個数: 40

約数和(自身を含む): 50644080

約数和(自身を除く): 29952320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13613, 27226, 54452, 68065, 108904, 136130, 217808, 258647, 272260, 517294, 544520, 1034588, 1089040, 1293235, 2069176, 2586470, 4138352, 5172940, 10345880, 20691760]

約数ペア:

[(1, 20691760), (2, 10345880), (4, 5172940), (5, 4138352), (8, 2586470), (10, 2069176), (16, 1293235), (19, 1089040), (20, 1034588), (38, 544520), (40, 517294), (76, 272260), (80, 258647), (95, 217808), (152, 136130), (190, 108904), (304, 68065), (380, 54452), (760, 27226), (1520, 13613)]