398597120

素因数分解:

$2^{10}\times 5^1\times {\mathrm{127}}^1\times {\mathrm{613}}^1$

素因数の和:765

約数の個数: 88

約数和(自身を含む): 965266944

約数和(自身を除く): 566669824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 256, 320, 508, 512, 613, 635, 640, 1016, 1024, 1226, 1270, 1280, 2032, 2452, 2540, 2560, 3065, 4064, 4904, 5080, 5120, 6130, 8128, 9808, 10160, 12260, 16256, 19616, 20320, 24520, 32512, 39232, 40640, 49040, 65024, 77851, 78464, 81280, 98080, 130048, 155702, 156928, 162560, 196160, 311404, 313856, 325120, 389255, 392320, 622808, 627712, 650240, 778510, 784640, 1245616, 1557020, 1569280, 2491232, 3114040, 3138560, 4982464, 6228080, 9964928, 12456160, 19929856, 24912320, 39859712, 49824640, 79719424, 99649280, 199298560, 398597120]

約数ペア:

[(1, 398597120), (2, 199298560), (4, 99649280), (5, 79719424), (8, 49824640), (10, 39859712), (16, 24912320), (20, 19929856), (32, 12456160), (40, 9964928), (64, 6228080), (80, 4982464), (127, 3138560), (128, 3114040), (160, 2491232), (254, 1569280), (256, 1557020), (320, 1245616), (508, 784640), (512, 778510), (613, 650240), (635, 627712), (640, 622808), (1016, 392320), (1024, 389255), (1226, 325120), (1270, 313856), (1280, 311404), (2032, 196160), (2452, 162560), (2540, 156928), (2560, 155702), (3065, 130048), (4064, 98080), (4904, 81280), (5080, 78464), (5120, 77851), (6130, 65024), (8128, 49040), (9808, 40640), (10160, 39232), (12260, 32512), (16256, 24520), (19616, 20320)]