990331392

素因数分解:

$2^9\times 3^1\times {\mathrm{644747}}^1$

素因数の和:644768

約数の個数: 40

約数和(自身を含む): 2638308816

約数和(自身を除く): 1647977424

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 512, 768, 1536, 644747, 1289494, 1934241, 2578988, 3868482, 5157976, 7736964, 10315952, 15473928, 20631904, 30947856, 41263808, 61895712, 82527616, 123791424, 165055232, 247582848, 330110464, 495165696, 990331392]

約数ペア:

[(1, 990331392), (2, 495165696), (3, 330110464), (4, 247582848), (6, 165055232), (8, 123791424), (12, 82527616), (16, 61895712), (24, 41263808), (32, 30947856), (48, 20631904), (64, 15473928), (96, 10315952), (128, 7736964), (192, 5157976), (256, 3868482), (384, 2578988), (512, 1934241), (768, 1289494), (1536, 644747)]