121959280

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{3919}}^1$

素因数の和:4321

約数の個数: 40

約数和(自身を含む): 284356800

約数和(自身を除く): 162397520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 778, 1556, 1945, 3112, 3890, 3919, 6224, 7780, 7838, 15560, 15676, 19595, 31120, 31352, 39190, 62704, 78380, 156760, 313520, 1524491, 3048982, 6097964, 7622455, 12195928, 15244910, 24391856, 30489820, 60979640, 121959280]

約数ペア:

[(1, 121959280), (2, 60979640), (4, 30489820), (5, 24391856), (8, 15244910), (10, 12195928), (16, 7622455), (20, 6097964), (40, 3048982), (80, 1524491), (389, 313520), (778, 156760), (1556, 78380), (1945, 62704), (3112, 39190), (3890, 31352), (3919, 31120), (6224, 19595), (7780, 15676), (7838, 15560)]