208030720

素因数分解:

$2^{10}\times 5^1\times {\mathrm{41}}^1\times {\mathrm{991}}^1$

素因数の和:1057

約数の個数: 88

約数和(自身を含む): 511717248

約数和(自身を除く): 303686528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 160, 164, 205, 256, 320, 328, 410, 512, 640, 656, 820, 991, 1024, 1280, 1312, 1640, 1982, 2560, 2624, 3280, 3964, 4955, 5120, 5248, 6560, 7928, 9910, 10496, 13120, 15856, 19820, 20992, 26240, 31712, 39640, 40631, 41984, 52480, 63424, 79280, 81262, 104960, 126848, 158560, 162524, 203155, 209920, 253696, 317120, 325048, 406310, 507392, 634240, 650096, 812620, 1014784, 1268480, 1300192, 1625240, 2536960, 2600384, 3250480, 5073920, 5200768, 6500960, 10401536, 13001920, 20803072, 26003840, 41606144, 52007680, 104015360, 208030720]

約数ペア:

[(1, 208030720), (2, 104015360), (4, 52007680), (5, 41606144), (8, 26003840), (10, 20803072), (16, 13001920), (20, 10401536), (32, 6500960), (40, 5200768), (41, 5073920), (64, 3250480), (80, 2600384), (82, 2536960), (128, 1625240), (160, 1300192), (164, 1268480), (205, 1014784), (256, 812620), (320, 650096), (328, 634240), (410, 507392), (512, 406310), (640, 325048), (656, 317120), (820, 253696), (991, 209920), (1024, 203155), (1280, 162524), (1312, 158560), (1640, 126848), (1982, 104960), (2560, 81262), (2624, 79280), (3280, 63424), (3964, 52480), (4955, 41984), (5120, 40631), (5248, 39640), (6560, 31712), (7928, 26240), (9910, 20992), (10496, 19820), (13120, 15856)]