204121520

素因数分解:

$2^4\times 5^1\times {\mathrm{397}}^1\times {\mathrm{6427}}^1$

素因数の和:6837

約数の個数: 40

約数和(自身を含む): 475851984

約数和(自身を除く): 271730464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 397, 794, 1588, 1985, 3176, 3970, 6352, 6427, 7940, 12854, 15880, 25708, 31760, 32135, 51416, 64270, 102832, 128540, 257080, 514160, 2551519, 5103038, 10206076, 12757595, 20412152, 25515190, 40824304, 51030380, 102060760, 204121520]

約数ペア:

[(1, 204121520), (2, 102060760), (4, 51030380), (5, 40824304), (8, 25515190), (10, 20412152), (16, 12757595), (20, 10206076), (40, 5103038), (80, 2551519), (397, 514160), (794, 257080), (1588, 128540), (1985, 102832), (3176, 64270), (3970, 51416), (6352, 32135), (6427, 31760), (7940, 25708), (12854, 15880)]