39981440

素因数分解:

$2^7\times 5^1\times {\mathrm{179}}^1\times {\mathrm{349}}^1$

素因数の和:547

約数の個数: 64

約数和(自身を含む): 96390000

約数和(自身を除く): 56408560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 179, 320, 349, 358, 640, 698, 716, 895, 1396, 1432, 1745, 1790, 2792, 2864, 3490, 3580, 5584, 5728, 6980, 7160, 11168, 11456, 13960, 14320, 22336, 22912, 27920, 28640, 44672, 55840, 57280, 62471, 111680, 114560, 124942, 223360, 249884, 312355, 499768, 624710, 999536, 1249420, 1999072, 2498840, 3998144, 4997680, 7996288, 9995360, 19990720, 39981440]

約数ペア:

[(1, 39981440), (2, 19990720), (4, 9995360), (5, 7996288), (8, 4997680), (10, 3998144), (16, 2498840), (20, 1999072), (32, 1249420), (40, 999536), (64, 624710), (80, 499768), (128, 312355), (160, 249884), (179, 223360), (320, 124942), (349, 114560), (358, 111680), (640, 62471), (698, 57280), (716, 55840), (895, 44672), (1396, 28640), (1432, 27920), (1745, 22912), (1790, 22336), (2792, 14320), (2864, 13960), (3490, 11456), (3580, 11168), (5584, 7160), (5728, 6980)]