989409040

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{650927}}^1$

素因数の和:650959

約数の個数: 40

約数和(自身を含む): 2421452160

約数和(自身を除く): 1432043120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 650927, 1301854, 2603708, 3254635, 5207416, 6509270, 10414832, 12367613, 13018540, 24735226, 26037080, 49470452, 52074160, 61838065, 98940904, 123676130, 197881808, 247352260, 494704520, 989409040]

約数ペア:

[(1, 989409040), (2, 494704520), (4, 247352260), (5, 197881808), (8, 123676130), (10, 98940904), (16, 61838065), (19, 52074160), (20, 49470452), (38, 26037080), (40, 24735226), (76, 13018540), (80, 12367613), (95, 10414832), (152, 6509270), (190, 5207416), (304, 3254635), (380, 2603708), (760, 1301854), (1520, 650927)]