19776880

素因数分解:

$2^4\times 5^1\times {\mathrm{269}}^1\times {\mathrm{919}}^1$

素因数の和:1201

約数の個数: 40

約数和(自身を含む): 46202400

約数和(自身を除く): 26425520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269, 538, 919, 1076, 1345, 1838, 2152, 2690, 3676, 4304, 4595, 5380, 7352, 9190, 10760, 14704, 18380, 21520, 36760, 73520, 247211, 494422, 988844, 1236055, 1977688, 2472110, 3955376, 4944220, 9888440, 19776880]

約数ペア:

[(1, 19776880), (2, 9888440), (4, 4944220), (5, 3955376), (8, 2472110), (10, 1977688), (16, 1236055), (20, 988844), (40, 494422), (80, 247211), (269, 73520), (538, 36760), (919, 21520), (1076, 18380), (1345, 14704), (1838, 10760), (2152, 9190), (2690, 7352), (3676, 5380), (4304, 4595)]