200419840

素因数分解:

$2^9\times 5^1\times {\mathrm{79}}^1\times {\mathrm{991}}^1$

素因数の和:1093

約数の個数: 80

約数和(自身を含む): 487111680

約数和(自身を除く): 286691840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 395, 512, 632, 640, 790, 991, 1264, 1280, 1580, 1982, 2528, 2560, 3160, 3964, 4955, 5056, 6320, 7928, 9910, 10112, 12640, 15856, 19820, 20224, 25280, 31712, 39640, 40448, 50560, 63424, 78289, 79280, 101120, 126848, 156578, 158560, 202240, 253696, 313156, 317120, 391445, 507392, 626312, 634240, 782890, 1252624, 1268480, 1565780, 2505248, 2536960, 3131560, 5010496, 6263120, 10020992, 12526240, 20041984, 25052480, 40083968, 50104960, 100209920, 200419840]

約数ペア:

[(1, 200419840), (2, 100209920), (4, 50104960), (5, 40083968), (8, 25052480), (10, 20041984), (16, 12526240), (20, 10020992), (32, 6263120), (40, 5010496), (64, 3131560), (79, 2536960), (80, 2505248), (128, 1565780), (158, 1268480), (160, 1252624), (256, 782890), (316, 634240), (320, 626312), (395, 507392), (512, 391445), (632, 317120), (640, 313156), (790, 253696), (991, 202240), (1264, 158560), (1280, 156578), (1580, 126848), (1982, 101120), (2528, 79280), (2560, 78289), (3160, 63424), (3964, 50560), (4955, 40448), (5056, 39640), (6320, 31712), (7928, 25280), (9910, 20224), (10112, 19820), (12640, 15856)]